捷波朗(Jabra)BT2045灵动蓝牙耳机好不好、怎么样、优缺点

JabraA third-party certification according to ISO 14024Toward sustainable IT productsSay helloto a more sustainable productIT products are associated with a wide range of sustainability risksthroughout their life cycle. Human rights violations are common in thefactories. Harmful substances are used both in products and theirmanufacture. Products can often have a short lifespan because of poorergonomics, low quality and when they are not able to be repaired orupgraded.This product is a better choice. It meets all the criteria in TCO Certified,the world’s most comprehensive sustainability certification for ITproducts. Thank you for making a responsible product choice, that helpdrive progress towards a more sustainable future!Criteria in TCO Certified have a life-cycle perspective and balanceenvironmental and social responsibility. Conformity is verified byindependent and approved verifiers that specialize in IT products, socialresponsibility or other sustainability issues. Verification is done bothbefore and after the certificate is issued, covering the entire validityperiod. The process also includes ensuring that corrective actions areimplemented in all cases of factory non-conformities. And last but notleast, to make sure that the certification and independent verification isaccurate, both TCO Certified and the verifiers are reviewed regularly.Want to know more?Read information about TCO Certified, full criteria documents, news andupdates at . On the website you’ll also find our ProductFinder, which presents a complete, searchable listing of certifiedproducts.© 2023 GN Audio A/S. All rights reserved. Jabra® is a trademark of GN Audio A/S. The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by GN Audio A/S is under license.Made in ChinaMO DEL:O TE150R/O TE150L/CPB1551. Welcome (6)2. Jabra Elite 4 overview (7)2.1 Included accessories3. How to wear (9)3.1 Changing EarGels4. How to charge (11)4.1 Charging the earbuds4.2 Fast charge the earbuds4.3 Charging the charging case using USB5. What the LEDs mean (14)6. How to pair (16)6.1 Pairing with a mobile device7. How to use (17)7.1 Power the earbuds off/on7.2 Music controls7.3 Call controls7.4 Voice assistant controls7.5 Active Noise Cancellation7.6 HearThrough7.7 Spotify Tap7.8 Sidetone7.9 Mono earbud use7.10 Sleep mode7.11 Multiple call handling7.12 Update firmware7.13 Reset the earbuds8. Jabra Sound+ app (29)9. Support (30)9.1 FAQ9.2 How to care for your earbuds9.3 Replacement accessories9.4 Using replacement earbuds9.5 Using a replacement charging case1. WelcomeThank you for using the Jabra Elite 4. We hope you will enjoy it!Jabra Elite 4 features• Everyday durability. IP55-rated water and sweat proof protection with a 2-year warranty*.• Active Noise Cancellation (ANC). Block intrusive sounds and stay in the zone.• Your music your way. Boost the bass or turn up the treble with the customizable equalizer.• Stay alert with HearThrough. Hear what’s going on around you.• Clear calls in noisy places. 4 microphones for great call clarity on the go.• Small on size. Big on power. Up to 7 hours inthe buds, and up to 22 hours with the case (28 hours ANC off) + fast charge• Use either earbud with mono mode.• Spotify Tap**.* A gainst failure from dust and water with Jabra Sound+ app registration** S potify Tap is compatible with Android only2. Jabra Elite 4 overviewJabra Elite 4 earbudsRightCharging caseLEFT EARBUDRIGHT EARBUDUSB-C charging cableCarefully insert each earbud into your ear. Position the microphones on the earbuds towards your mouth.3.1 Changing EarGelsFor the optimal audio experience, it is recommended to try each of the different EarGel sizes. The fit should feel light and comfortable in your ear. The medium EarGels are pre-mounted on the earbuds.SM L4. How to chargeThe J abra Elite 4 offers up to 7 hours of battery and up to 28 hours with the charging case and fast charge.4.1 Charging the earbudsPlace the earbuds in the charging case and close the lid. It takes up to 2 hours to fully recharge the earbuds.When the earbuds are removed from the charging case, the LEDs on the earbuds will light up red, yellow or green to indicate the battery status of the earbuds. The LED on the front of the charging case indicates the battery status of the charging case.4.2 Fast charge the earbudsPlacing the earbuds in the charging case for 10 minutes when they are at low battery will fast charge the earbuds, offering up to 60 minutes of battery. Fast charging the earbuds requires that the charging case has a minimum of 30% battery. You can see the current battery status of the earbuds using the Jabra Sound+ app.4.3 Charging the charging caseusing USBPlug the supplied USB-C charging cable into the charging case and a USB-A power supply or certified wall charger. It takes up to 3.5 hours to fully charge the earbuds and the charging case (depending on the charger used)below 2A. It is not recommended to charge the earbuds or charging case using a power supply with a higher voltage.5. What the LEDs meanH igh batteryMedium batteryLow batteryC ritically low battery(earbuds not charging)EARBUD STATUSBATTERY STATUS WHENDOCKING/UNDOCKINGEARBUDSH igh battery/Power onMedium batteryLow batteryP ower offPairingResetting/Firmware updatingHigh batteryMedium battery Low batteryFully chargedCHARGING CASE STATUS WHEN CONNECTED WITH USB CABLE6. How to pair6.1 Pairing with a mobile device1. Power on the earbuds by removing them from the charging case. Alternatively, press the Left and Right buttons to power the earbuds on.2. Press and hold (3 sec) the Left and Right buttons simultaneously until the earbud LED flashes blue. The earbuds will now be ready to pair to your phone.3. Go to the Bluetooth settings on your smartphone and select the Jabra Elite 4 from the list of available devices to complete the pairing.7. How to use7.1 Power the earbuds off/onPlace the earbuds in the charging case to power off. Remove the earbuds from theTo manually power off the earbuds, press both the Left and Right buttons simultaneously, or press and hold (5 sec) the Left or Right button when in Mono mode.To manually power on the left or right earbud, press the Left or Right button.7.2 Music controlsPlay/pause music Press the Right button when not on a callVolume upPress and hold the Right button Press and hold the Left button Volume downNext track Double-press the Right button when listening to musicRestart track or previous trackTriple-press the Right button when listening to musicRepeat to skip to the previous track7.3 Call controlsLeft earbud Function Right earbudPress the Left orRight button Answer call Press the Left or Right buttonDouble-press the Left or Right button End/Reject callDouble-pressthe Left or RightbuttonPress the Left or Right button Mute/unmutemicrophonePress the Left orRight buttonVolume up Press and holdthe Right buttonPress and hold theLeft button Volume down7.4 Voice assistant controlsDouble-press theLeft button whennot on a call7.5 Active Noise CancellationActive Noise Cancellation (ANC) counters noise by detecting and analyzing the pattern of incoming sound, and then generating an anti-noise signal to cancel noise out. As a result, you experience a reduced level of surrounding noise during music and media playback.Press the Leftbutton whennot on a callANC can be customized using the Jabra Sound+ app.7.6 HearThroughHearThrough lets you pay attention to your surroundings and engage in conversation, when not on a call, without needing to remove the earbuds. The microphones pick up surrounding sounds and transmit them to the speakers.Press the Leftbutton when noton a callHearThrough can be customized using the Jabra Sound+ app.7.7 Spotify TapWhen enabled using the Jabra Sound+ app, it is possible on Android devices to control Spotify Tap playback using the left earbud.Spotify Tap is off by default.Resume last played Spotify Double-press the Left button when recommended song Left button when Spotify is open7.8 SidetoneSidetone enables you to hear your own voice when you are on a call. The benefit of Sidetone is that it enables you to determine how loud you are speaking.Sidetone is on by default during calls and can be turned on/off using the Jabra Sound+ app.7.9 Mono earbud useThe right or left earbud can be used individually for music playback or for calls. To activate mono earbud mode, place the unused earbud into the charging case.Play/pause music Press the Left button when listening to musicAnswer call Press the Left buttonEnd/Reject call Double-press the Left buttonActivate Voice assistant or Spotify Tap Double-press the Left button when not on a callAdjust volume Use the volume controls on the paired mobile devicePlay/pausemusicPress the Right buttonwhen listening tomusicAnswer call Press the Right buttonEnd/RejectcallDouble-press theRight buttonMute/unmutemicrophonePress the Right buttonwhen on a callNext trackDouble-press theRight button whenlistening to musicRestart trackor previoustrackTriple-press the Rightbutton when listeningto musicRepeat to skip to theprevious trackAdjust volumeUse the volumecontrols on the pairedmobile deviceThe left and right earbuds will automatically relink when both are placed in your ears.7.10 Sleep modeTo conserve battery, the earbuds will automatically power off when they are out of range of your mobile device for 15 minutes and are not in the charging case, or when they have been inactive for 30 minutes.To power the earbuds on, press the Left and Right buttons. Alternatively, place the earbuds in the charging case and then take them back out.7.11 Multiple call handlingThe earbuds can accept and handle multiple calls at the same time.7.12 Update firmwareThe Jabra Elite 4 can be updated to the latest firmware version using the Jabra Sound+ app. If notifications are enabled in J abra Sound+, you will receive an automatic notification when a firmware update is available. Follow the instuctions in the app to firmware update the earbuds.7.13 Reset the earbudsResetting the earbuds clears the list of paired devices and resets all settings.1. Place both earbuds in the charging case.2. Press and hold (10 sec) the Left and Right buttons on the earbuds simultaneously until the LEDs on the earbuds flash pink.3. When the LEDs stop flashing pink the earbuds have been reset.The earbuds will need to be re-paired to your mobile device. Remember to delete/forget the pairing in the Bluetooth menu on your mobile device.8.Jabra Sound+ app Jabra Sound+ app9. Support9.1 FAQView the FAQs on /help/elite49.2 How to care for your earbuds• Always store the earbuds in the charging case and safely protected.• To prevent the depletion of the battery lifetime or capacity, avoid storing the earbuds in hot or cold environments, such as a closed car in summer, or in winter conditions.• It is recommended to store the earbuds between -20°C and 45°C (-4°F and 113°F).• Do not store the earbuds for extended periods of time without recharging them (max. three months).• If the earbuds or the charging case become dirty, it is recommended to clean them with a soft, lint-free cloth that has been dampened with clean water.• It is recommended to use a power supply with 5V +-0.25V and maximum charging current below 2A. It is not recommended to charge the earbuds or charging case using a9.3 Replacement accessoriesReplacement or additional accessories can bepurchased online at /accessories.Left and right earbud setCharging caseEarGelsMSL9.4 Using replacement earbuds1. P air the replacement earbuds to your phone (see section 6.1)2. U pdate the earbud firmware using the Jabra Sound+ app.9.5 Using a replacement charging case Before using a replacement charging case, it is recommended to charge it for 1 hour.。

Jabra© 2021 GN Audio A/S. All rights reserved. Jabra® is a trademark of GN Audio A/S. The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by GN Audio A/S is under license.Made in ChinaMODEL:O TE160R/OTE160L/CPB1601. Welcome (5)2. Jabra Elite 4 overview (6)2.1 Included accessories3. How to wear (8)3.1 Changing EarGels4. How to charge (10)4.1 Charging the earbuds4.2 Fast charge the earbuds4.3 Charging the charging case using USB5. What the LEDs mean (13)6. How to pair (15)6.1 Pairing with a mobile device7. How to use (16)7.1 Power the earbuds on/off7.2 Music controls7.3 Call controls7.4 Voice assistant controls7.5 Active Noise Cancellation7.6 HearThrough7.7 One-touch Spotify playback7.8 Sidetone7.9 Mono earbud mode7.10 Sleep mode7.11 Multiple call handling7.12 Update firmware7.13 Reset the earbuds8. Jabra Sound+ app (28)9. Support (29)9.1 FAQ9.2 How to care for your earbuds9.3 Replacement accessories9.4 Using replacement earbuds9.5 Using a replacement charging case1. WelcomeThank you for using the Jabra Elite 4 Active. We hope you will enjoy it!Jabra Elite 4 Active features• Powerful bass and customizable sound for life on the go.• 4-mic technology for clearly better calls.• Sleek Danish design, with a premium finish.• HearThrough lets you hear what’s going on around you.• Up to 7 hours battery in the buds, and a total of 28 hours with the case.• Mono mode lets you use either earbud while the other charges.• Engineered for noise-isolation.• IP57-rated rainproof protection, plus 2-year warranty*.• Alexa** on press. Press to ask Alexa, plus one-touch Spotify playback***.* A gainst failure from dust and water with Jabra Sound+ app registration** A lexa voice assistant and features only available forAndroid version 6.0 or higher*** I nstant Alexa activation and one-touch Spotify playback2. Jabra Elite 4 Active overviewJabra Elite 4 Active earbudsRightCharging caseLEFT EARBUDRIGHT EARBUD2.1 Included accessoriesEarGelsLS Mpre-mounted on the earbudsUSB-C charging cableCarefully insert each earbud into your ear. Position the microphones on the earbuds towards your mouth.3.1 Changing EarGelsFor the optimal audio experience, it is recommended to try each of the different EarGel sizes. The fit should feel light and comfortable in your ear. The medium EarGels are pre-mounted on the earbuds.SM L4. How to chargeThe Jabra Elite 4 Active offers up to 7 hours of battery and up to 28 hours with the charging case and fast charge.4.1 Charging the earbudsPlace the earbuds in the charging case and close the lid. It takes up to 2 hours to fully recharge the earbuds.When the charging case lid is opened with the earbuds inside, the LEDs on the earbuds will light up red, yellow or green to indicate the battery status of the earbuds. The LED on the front of the charging case indicates the battery status of the charging case.4.2 Fast charge the earbudsPlacing the earbuds in the charging case for 10 minutes when they are at low battery will fast charge the earbuds, offering up to 60 minutes of battery. Fast charging the earbuds requires that the charging case has a minimum of 30% battery. You can see the current battery status of the earbuds using the Jabra Sound+ app.4.3 Charging the charging caseusing USBPlug the supplied USB-C charging cable into the charging case and a USB-A power supply or wall charger. It takes up to 3.5 hours to fully charge the earbuds and the charging case (depending on the charger used).below 2A. It is not recommended to charge the earbuds or charging case using a wall charger with a higher voltage.5. What the LEDs meanH igh batteryMedium batteryLow batteryC ritically low battery(earbuds not charging) EARBUD STATUSBATTERY STATUS WHENOPENING CHARGINGCASEH igh batteryMedium batteryLow batteryP ower offPairingResetting/Firmware updatingHigh batteryMedium battery Low batteryFully charged CHARGING CASE STATUS WHEN CONNECTED WITH USB CABLE6. How to pair6.1 Pairing with a mobile device1. Power on the earbuds by removing them from the charging case. Alternatively, press the Left and Right buttons to power the earbuds on.2. Press and hold (3 sec) the Left and Right buttons simultaneously until the earbud LED flashes blue. The earbuds will now be ready to pair to your phone.3. Go to the Bluetooth settings on your smartphone and select the Jabra Elite 4 Active from the list of available devices to complete the pairing.7. How to use7.1 Power the earbuds on/offPlace the earbuds in the charging case to power off. Remove the earbuds from the charging case to power on.To power off the earbuds manually, press both the Left and Right buttons simultaneously. To power off an earbud in mono mode, press and hold the button on the earbud for 5 seconds. To power on the left or right earbud manually, press the Left or Right button.7.2 Music controlsPlay/pause music Press the Right button when not on a callVolume upPress and hold the Right button Press and hold the Left button Volume downNext track Double-press the Right button when listening to musicRestart track or previous trackTriple-press the Right button when listening to musicRepeat to skip to the previous track7.3 Call controlsLeft earbud Function Right earbudPress the Left orRight button Answer call Press the Left or Right buttonDouble-press the Left or Right button End/reject callDouble-pressthe Left or RightbuttonPress the Left or Right button Mute/unmutemicrophonePress the Left orRight buttonVolume up Press and holdthe Right buttonPress and hold theLeft button Volume down7.4 Voice assistant controlsDouble-press theLeft button whennot on a call* A lexa voice assistant and features only available for Android version 6.0 or higher7.5 Active Noise CancellationActive Noise Cancellation (ANC) counters noise by detecting and analyzing the pattern of incoming sound, and then generating an anti-noise signal to cancel noise out. As a result, you experience a reduced level of surrounding noise during music and media playback.Press the Leftbutton whennot on a callANC is disabled by default and can enabled and personalized using the J abra Sound+ app. A firmware update may be required to enable ANC.7.6 HearThroughHearThrough lets you pay attention to your surroundings and engage in conversation, when not on a call, without needing to remove the earbuds. The microphones pick up surrounding sounds and transmit them to the speakers.Press the Leftbutton whennot on a callHearThrough can be adjusted using the Jabra Sound+ app. A firmware update may be required to adjust HearThrough.7.7 One-touch Spotify playbackWhen configured using the Jabra Sound+ app on an Android device, it is possible to control one-touch Spotify playback using the left earbud.One-touch Spotify playback is off by defaultand is available for Android devices.Resume last played Spotify Double-press the Left button when recommended song Left button when Spotify is open7.8 SidetoneSidetone enables you to hear your own voice when you are on a call. The benefit of Sidetone is that it enables you to determine how loud you are speaking.Sidetone is on by default during calls and can be turned on/off using the Jabra Sound+ app.7.9 Mono earbud modeThe right or left earbud can be used individually for music playback or for calls. To activate mono earbud mode, place the unused earbudinto the charging case.Play/pause musicPress the Left button when listening to music Answer callPress the Left button End/reject callDouble-press the Left button Activate Voice assistant or one-touch Spotify playback Double-press the Left button when not on a callAdjust volume Use the volume controls on the paired mobile devicePlay/pausemusicPress the Right buttonwhen listening tomusicAnswer call Press the Right buttonEnd/reject call Double-press theRight buttonMute/unmutemicrophonePress the Right buttonwhen on a callNext trackDouble-press theRight button whenlistening to musicRestart trackor previoustrackTriple-press the Rightbutton when listeningto musicRepeat to skip to theprevious trackAdjust volumeUse the volumecontrols on the pairedmobile deviceThe left and right earbuds will automatically relink when both are placed in your ears.7.10 Sleep modeTo conserve battery, the earbuds will automatically power off when they are out of range of your mobile device for 15 minutes and are not in the charging case, or when they have been inactive for 30 minutes.To power the earbuds on, press the Left and Right buttons. Alternatively, place the earbuds in the charging case and then take them back out.7.11 Multiple call handlingThe earbuds can accept and handle multiple calls at the same time.7.12 Update firmwareThe Jabra Elite 4 Active can be updated to the latest firmware version using the Jabra Sound+ app.If notifications are enabled in J abra Sound+, you will receive an automatic notification when a firmware update is available. Follow the instuctions in the app to firmware update the earbuds.7.13 Reset the earbudsResetting the earbuds clears the list of paired devices and resets all settings.1. Place both earbuds in the charging case.2. Press and hold (10 sec) the Left and Right buttons on the earbuds simultaneously until the LEDs on the earbuds flash magenta.3. When the LEDs stop flashing magenta the earbuds have been reset.The earbuds will need to be re-paired to your mobile device. Remember to delete/forget the pairing in the Bluetooth menu on your mobile device.8.Jabra Sound+ app Jabra Sound+ app9. Support9.1 FAQView the FAQs on /help/elite4active 9.2 How to care for your earbuds• Always store the earbuds in the charging case and safely protected.• To prevent the depletion of the battery lifetime or capacity, avoid storing the earbuds in hot or cold environments, such as a closed car in summer, or in winter conditions.• It is recommended to store the earbuds between -20°C and 45°C (-4°F and 113°F).• Do not store the earbuds for extended periods of time without recharging them (max. three months).• If the earbuds or the charging case become dirty, it is recommended to clean them with a soft, lint-free cloth that has been dampened with clean water.• It is recommended to use a power supply with 5V +-0.25V and maximum charging current below 2A. It is not recommended to charge the earbuds or charging case using a9.3 Replacement accessoriesReplacement or additional accessories can bepurchased online at /accessories.Left and right earbud setCharging caseEarGelsMSL9.4 Using replacement earbuds1. P air the replacement earbuds to your mobile device (see section 6.1)2. U pdate the earbud firmware using the Jabra Sound+ app.9.5 Using a replacement charging case Before using a replacement charging case, it is recommended to charge it for 1 hour.31。

蓝牙耳机/2.4G耳机区别无线技术优缺点解读随着人们生活水平的不断提高，越来越多的用户开始追求自己的私有空间，虽然音箱产品的无线化趋势越来越明显，但这仅仅只是为了装修时的便捷和箱子摆放的便利，而对个人私有空间依然是个侵犯。

所以，无线耳机产品才是未来音频领域发展的一个重要趋势：无拘无束的听音环境才是我们最为在意的。

目前的无线传输技术主要包括FM、射频、红外以及现在比较流行的 2.4G技术。

FM 最致命的缺陷就是保密性不强，普遍音质不佳，最高22KHz的采样率被称之为“收音机音质”；飞利浦FM调频无线耳机红外指向性要求很高，大家很容易体验到红外遥控器稍微偏离角度就不能进行操作。

它们的缺点是显而易见的。

松下红外遥控器而2.4G技术不仅能避免上述缺陷，还具有保密性高、体积小巧、省电、传输距离远、双向双工工作、传输带宽较大等优点，成为无线耳麦的最佳解决搭配。

而运用2.4G技术的蓝牙耳机和2.4G耳机各自有什么优缺点呢？谁才是最佳方案呢？我们比较一下。

一、蓝牙蓝牙技术，这是一种基于2.4G技术的无线传输协议，由于采用的协议不同，所以有区别于其它2.4G技术而被称之为蓝牙技术。

就目前来说，蓝牙技术最广的应用就是蓝牙耳机。

由于大部分的手机都集成蓝牙功能，而部分MP3音频产品也集成了蓝牙模块，所以蓝牙耳机“群众基础”广泛，使用成本较低。

索尼爱立信在移动通讯中使用的蓝牙产品由于蓝牙耳机的这种得天独厚的优点，所以大部分的蓝牙无线设备它不需要设置发射机，而则仅有蓝牙耳机这个接收机就可以工作，使用成本得到降低；其次，蓝牙耳机保密性佳，这点是有2.4G的频率特性所决定的，它意味着不容易造成跳频、谐波而被窃听。

最后，蓝牙耳机目前已经相当成熟，百元左右即可购入品质不错的蓝牙耳机，性价比较高。

蓝牙技术致命的缺点就是它的传输数据量小，仅能达到每秒1M左右，即便是宣称为听音乐设计的双声道蓝牙耳机也是如此，高低频部分被严重压缩，保留的中频部分仅仅能够实现语音通话；另外，蓝牙技术需要交纳专利费，即便是您的蓝牙耳机仅有不足百元，3-5美金的专利费还是“必不可少”的。

用户手册7简体中文致谢 (2)您的捷波朗 bT2070 (2)您的耳机具有哪些功能 (3)如何使用 (4)给您的耳机充电 (4)开启及关闭您的耳机 (5)将耳机与您的手机配对 (5)佩戴风格 (6)如何实现下列操作 (6)各种指示灯信号代表的含义 (8)故障诊断与常见问题问答 (8)需要更多帮助？ (9)呵护您的耳麦 (9)警告！ (10)担保 (11)认证与安全认可 (13)术语表 (14)致谢谢谢您购买捷波朗 bT2070 蓝牙®耳机。

我们希望您从中得到享受！本使用手册将让您做好一切准备，为您充分享用您的耳机，启动您的愉快历程。

您的捷波朗 BT20701接听/结束按钮，开启/关闭按钮2发光二极管指示灯3充电器插座4音量上调/音量下调按钮5耳钩您的耳机具有哪些功能您的捷波朗 BT2070 让您能够进行下述所有操作：• 接听电话• 结束通话• 拒绝接听来电*• 语音拨号*• 最近号码重拨*• 呼叫等待*• 通话暂停*性能规格• 通话时间长达 4 小时/待机时间长达 180 小时• 可充电电池，充电选择包括交流电源充电、利用 USb 电缆通过个人电脑充电或通过车载充电器（不包含在内）充电• 耳机状态及电池白光指示灯• 安静模式—1分钟后关闭指示灯• 几何尺寸：长x宽x高：41.5mm x 18.9mm x 25.9mm• 重量：8克• 符合 2.0 + eDr（增强数据速率）版本蓝牙规范，支持用于手机通话的耳机协议和免持协议• 增强音频质量的 e-SCO 同步定向连接•128 位加密运算•最大工作距离达 10 米（约 33 英尺）如何使用在使用您的耳机之前，请完成下述三个步骤：1. 给您的耳机充电2. 在您的手机上启动蓝牙功能（请参阅您的手机手册）3. 将您的耳机配对连接到您的手机上捷波朗 bT2070 易于操作。

耳机上的接听/结束按钮根据您按下的时间长短实现不同的功能。

给您的耳机充电开始使用之前，请确保您的捷波朗 bT2070 耳机已充满电。

USER MANUAL20073200252简体中文致谢 (2)关于您的捷波朗BT2040 (2)您的新耳麦具有哪些功能 (3)如何使用 (3)随心所欲地佩戴耳麦 (5)如何实现下列操作 (6)各种指示灯信号代表的含义 (7)电池省电模式 (7)故障诊断与常见问题问答 (7)需要更多帮助？ (8)呵护您的耳麦 (8)警告！ (9)担保 0认证与安全认可 ....................................... 术语表.. (2)致谢谢谢您购买捷波朗（Jabra）BT2020蓝牙®耳麦。

我们希望您从中得到享受！ 本使用手册将让您做好一切准备，为您充分享用您的耳麦，启动您的愉快历程。

关于您的捷波朗BT20401 发光指示灯（发光二极管）您的新耳麦具有哪些功能您的捷波朗BT2040让您能够进行所有下述操作：• 接听电话• 结束通话• 拒绝接听来电 *• 语音拨号 *• 最近号码重拨 *• 呼叫等待 *• 通话暂停 ** 取决于手机功能性能规格：• 通话时间长达11小时/待机时间长达六个月• 重16克• 最大工作距离10米（约33英尺）• 耳麦协议与免持蓝牙协议配置（参见术语表）• 2.0版本蓝牙规范（参见术语表）如何使用捷波朗BT2040易于操作。

在使用您的耳麦之前，您需完成下述步骤：1. 打开盖板，将电池置于耳麦内。

切记按电池的正确方位装入电池。

2. 在您的手机上启动蓝牙功能（请参阅您的手机手册）。

3. 开启您的耳麦。

4. 让您的耳麦与您的手机配对。

耳麦上的接听/结束按钮根据您按下的时间长短实现不同的功能。

调换电池A. 要将电池装入耳麦，请滑动取下背面的电池盖，放入电池，滑动装回盖板。

请确保电池按正确的安装方位装入。

会交替发出两种音调的声音，向您发出警告。

开启及关闭您的耳麦按下接听/结束按钮，至您看到一次蓝色闪光，开启您的耳麦。

按下并按住接听/结束按钮，至您看到一次蓝色闪光，关闭您的耳麦。

四款降噪蓝牙耳机横评在今天，追求清晰的通话音质仍然是一件乐此不疲的事情，人们不仅赋予蓝牙耳机以解放双手的特点，同时还将降噪、祛噪的本领授予它，让其担负起清晰通话的任务。

传递声音已经成为人类最基本的追求，而清晰的声音不仅能够缩短人们沟通的距离，而且还会让你的周围变得空旷无比，令噪音消失得无影无踪。

降噪功能渐流行人们对降噪功能的需求可能从未迫切过，虽然在手机身上我们很少看到这项技术，但降噪却已经成为高端蓝牙耳机赖以生存的卖点，毕竟通话音质就是蓝牙耳机的全部，所以降噪功能没有理由不大行其道。

降噪耳机原理解析噪音也是一种声音，通话时与人声混杂在一起，因此必须采用特殊手段进行区分。

以最常见到的风噪为例，在时速24公里的风噪环境中，声音的波形图如图A所示，不仅杂乱无章，而且可以看到是连续的、尖锐的、幅度很大的波形，这个时候人声完全被风噪覆盖，所以根本不可能听清。

采用降噪手段后，波形图如图B所示，不仅干净、清晰了很多，而且波动幅度没有图A那么大，一段段的话音也能够清晰看到。

两张波形图对比就能看出，噪音对于人声的干扰已经达到无法容忍的地步，在很多环境中，不采取降噪手段，根本无法通话。

波形图不仅形象化的表现出人声和噪音的关系，同时也能够作为降噪研发的切入点。

既然要降低或消除噪音，那么就要先获取噪音的音源，因此可通过单独麦克风拾取噪音的方式来捕捉通话者周围的环境噪音，然后再对比人声的基础上，产生反向波形将其消除，这样就能够传递更加清晰和精准的人声。

尖锐且震荡幅度很大的波形，表明噪声十分突出，且抑制了人声。

有规律的震荡且时断时续，表面这是典型的通话特征，相比图A显得干净和清晰了许多。

蓝牙耳机的降噪级别虽然同样是降噪概念，但各个厂商使用的手段并不相同，因此所获得的降噪效果也是大有差别的，当然有些高端产品会将其中的几项技术综合起来，获得更胜一筹的“清音”效果，下面我们就带大家剖析一下这些降噪手段。

第一级——过滤风噪风噪现象在开车时非常明显，速度越快，风声也就越恼人，在车窗全开时速60公里的情况下，风噪可完全盖过语音而令对方全然无法听清。

蓝牙耳机热浪来袭作者：王亚楠来源：《科学新生活》2013年第09期它让手机和耳机分家，小偷再也不能顺着耳机线偷走手机了！它解放了我们的双手，接电话都不用拿起手机了！它就是现今备受追捧的市场新宠——蓝牙耳机！高端贵族缤特力Voyager pro+双待，支持同时挂两个蓝牙设备，不限电脑、平板、手机，你敢连接，它就敢挂上；智能感应，只需将其佩戴到耳朵上，它就能够自动接通呼叫，自动在电话和耳机之间转接；根据环境自动调节声音水平，自动屏蔽背景噪音，双话筒技术让对话更流畅。

待机时间：120小时适用机型：各主流品牌蓝牙手机参考价格：680元网友点评：通话质量绝对好，耳挂部分用的软橡胶包的，相当舒服。

待机时间相对较短，价格偏高。

飞利浦SHB7110轻击耳机表面即可调节音量，轻触即可接听电话；飞声音效技术能够带来纯净的音质，EverClear 技术让通话更加清晰通透；自动电量保护，延长电池使用时间。

待机时间：150小时适用机型：各主流品牌蓝牙手机参考价格：540元网友点评：持长时间通话，触控操作，立体声，价格相对较贵。

捷波朗Jabra WAVE弦月类似耳朵轮廓的流线型设计，简洁大方，耳后式佩戴更舒适；三重风噪抑制技术，音质更清晰；还可以将电脑或手机中的任何音频内容（音乐、播客、有声读物）串流到耳机播放，无需在电脑和手机之间进行切换。

待机时间：360分钟适用机型：各主流品牌蓝牙手机参考价格：449元网友点评：戴着挺舒服，安静环境通话质量不错，但是话筒套太爱掉了。

平价实用三星蓝牙耳机HM1600造型典雅，具有主动配对功能，可以自动搜寻最近的蓝牙耳机并主动与手机连接；具有多点连接技术，可以同时连接两部手机；特殊的降噪及回声消除DSP技术，有效消除通话时的背景噪音，实现清静通话。

待机时间：400小时适用机型：各主流品牌蓝牙手机参考价格：170元网友点评：待机时间真的很长，但是耳机清晰度不高，高音重，没有低音，听着声音比平时高两拍。

JABRA PRO 935用户手册© 2015 GN Netcom A /S . 保留所有权利。

Jabra ®（捷波朗）是 GN Netcom A /S 的注册商标。

本文中提到的所有其它商标均为其各自所有者的财产。

Bluetooth ®（蓝牙）字标和徽标归 Bluetooth SIG , Inc . 所有，GN Netcom A /S 经许可使用此类标志。

（设计和规格如有更改恕不另行通知）。

符合性声明可在www .jabra .com /CP /US /declarations -of -conformity 上找到中国制造型号 WHB005HS / WHB005BSU1. 欢迎使用 (4)2. 产品概览 (5)3. 给耳机充电 (8)4. 如何佩戴 (10)5. 如何连接 (12)6. 如何使用 (16)7. 语音提示 (18)8. 底座 LED 指示灯 (19)9. 软件 (21)10. 高级设置 (22)11. 支持 (25)12. 技术规格 (26)1. 欢迎使用感谢您使用 Jabra PRO 935。

希望您使用愉快！JABRA PRO 935 的特色简单的即插即用享受无线自由-距底座的距离最远可达 100 米/300 英尺12 小时通话时长NFC 近场通信技术-一触即连2. 产品概览2.1 耳机2.2 底座指示灯端口音量调低按钮音量调高按钮静音按钮可折叠底座支架Jabra PRO 935 底座支架可折叠成三种情况：打开、收起和站立。

2.3 可选配件以下 Jabra PRO 配件可单独供应。

如需查看完整的配件清单，请访问 。

充电线缆颈带附件替换耳勾，带耳塞替换耳垫替换头带附件3. 给耳机充电将底座连接到电源，然后将耳机插入底座即可充电。

给耳机充满电大约需要三个小时。

3.1耳机电池电量状态高中低极低电池正在充电4.如何佩戴头带式耳勾式（可选配件）颈带式（可选配件）所有佩戴方式均可以左耳或右耳佩戴。