?Exercise is good for the body as well as psyche， but if you listen to music while exercising， you brain will even work better. People not only like listening to music while exercising， but also don't want to miss any important calls while exercising. With this new Waterproof wireless Sport Bluetooth 4.1 Headset; you can easily realize the two thoughts and control your music and calls by the button of the headset. And， its hands-free function can set free you hands from answering the call during exercise. Moreover， this Sport Headset is light in weight and portable， and has a high-grade built-in microphone which can offer you wonderful sound quality. It is perfectly suitable for jogging， mountain-climbing and other sports.   Features: This sport headset is stylish， sport and waterproof stereo Bluetooth headset， which uses novel design and has beautiful streamline appearance. It uses the renowned stereo Bluetooth chip， which guarantees the high fidelity， stable performance and excellent communication effect. This sport headset supports Bluetooth V4.1， Bluetooth A2DP and call.  Enjoy music wirelessly， easy to switch between calls and music， you will not miss any incoming call whilst listening to music. Flexible neck-strap with memory function (Easy to carry and custody). Built-in dual microphone for noise reduction. Support hands-free call and smart voice prompt navigation.  Thoroughly set free you hands from answering the call during exercise. Support multipoint connections: Can simultaneously connect two suitable devices.<br> Support NFC function. Built-in high-sensitivity microphone， answer &amp; end a call at click of a button. Support check the power: The battery power is displayed on the connected phone (For iPhone， Xiaomi， while other Android phones need APP)， just long press the Next / Volume+ button for 3 seconds， it will tell you the power by voice promote (no music play status). When power is low， the headset beeps and the red light flashes. With 3D soundtrack， and support vibration function (boot up， shutdown， incoming call， etc). Easily control playing / pausing， adjusting the volume， previous/next songs， answering / rejecting / ending an incoming call and redialing the last number. Low power consumption， the standby time up to 240 hours. Equipped with a micro USB charging port (DC 5V) and can be easily charged by computer or any other device with USB interface. Compatible with almost all Bluetooth-enabled mobile devices such as， for iPhone6 6Plus 5S， for Samsung S5 S4 S3/Note 4 3 2， for HTC One， Tablet PC， Laptop， etc. And， it supports auto-reconnect. Portable and suitable for sport such as jogging， mountain-climbing， traveling， hiking and other sports.  Specifications: Brand Name: AEC Bluetooth Name: BQ-621 Bluetooth Version: Bluetooth 4.1 + EDR Bluetooth profile: HSP， HFP， A2DP， AVRCP Bluetooth working range: 10m Rechargeable battery type: Li- Polymer battery (120mAH) Speaker Diameter: ┵13mm Working current: 10 ~ 20mA Microphone: -45dB Output power: 2 * 0.125W Frequency range: 2.401 ~ 2.480GHz Distortion: ● 1 % Frequency response: 200Hz ~ 20KHz SNR: ◎ 95 Charging time: ●2 hours Talk Time: Up to 10 hours Music Play Time: Up to 6 hours Standby Time: 240 hours Charging voltage: DC5V/500mA Working environment: -10∥60→ Color: White The total length of the headset cable: 90cm  Main item weight: 26g / 0.94oz Package size: 16.5 * 14.0 * 3.2cm / 6.50 * 5.50 * 1.26 in Package weight: 92g / 3.27oz  Compatible Models: For iPhone6 6Plus 5S/ 5C/ 5/ 4S/ 4/ 3GS/ 3G For iPad 4th， 3rd， 2nd， 1st， iPad Mini For iPod Touch 4th/ 5th/ Nano 7 Samsung Galaxy S5 S4 S3 S2， Note 4/ Note 3/ Note 2， Tab Series For HTC One M7 M8 Desire X Series S V For Lumia 800 820 900 920 For Sony Xperia Z1 Z2 For LG Pro 2 Series Or other Bluetooth-enabled devices  Package list:  1 * Portable Flexible Neck-strap Style In-ear Wireless Sport Stereo Bluetooth 4.1 + EDR Headset 1 * USB Charge Cable 1 * English / Chinese User Manual<br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>