Exercise is good for the body as well as psyche， but if you listen to music while exercising， your brain will even work better. People not only like listening to music when exercising， but also don't want to miss any important calls while exercising. With the Wireless Stereo Bluetooth 4.0 Sport 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 or travel. Moreover， the 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: Crisp Treble， Natural Alto， Deep Bass. Bluetooth 4.0， strengthen the data transmission， more stable signal. High fidelity and stereo model make you enjoy wonderful music. High-performance built-in microphone with DSP technology (supports Noise reduction &amp; Echo cancellation). Enjoy music wirelessly， easy to switch between calls and music， you will not miss any incoming call whilst listening to music. Has streamlined appearance and supports hands-free call. Thoroughly set free you hands from answering the call during exercise or travel. Unique neck-strap design for easy carrying. Built-in high-sensitivity microphone， and supports voice prompt. Easily control playing / pausing， adjusting the volume， previous/next songs， answering / rejecting / ending an incoming call and redialing the last number. Powered by the included micro USB port. The included two pairs of silicone earmuffs with different sizes for comfortable wear and can greatly insulate the noise around you， and you can choose the optimal earmuff from the three earmuffs to enjoy the wonderful sound quality. 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. Mini size， portable and suitable for sport such as jogging， mountain-climbing and other sports.  Specifications: Brand Name: Andoer Bluetooth Name: CYB-18 Bluetooth Version: Bluetooth 4.0 + EDR Bluetooth profile: HSP， HFP， A2DP， AVRCP Frequency Response: 20 ~ 20KHz Total Harmonic: Distortion: &lt; 5% Bluetooth working range: 10m Rechargeable battery type: Li-ion battery Talk Time:4 hours Music Play Time: 4 hours Standby Time: UP to 180 hours Charging Time: 1.5 ~ 2.0 hours (Powered via USB cable) The headset cable length: 50cm Color: Blue， Black (Optional) Main item weight: 14.5g / 0.50oz Package size: 8.0 * 8.0 * 5.0cm / 8.07 * 3.94 * 1.18 in Package weight: 63g / 2.21oz  Package list:  1 * Sport Wireless Bluetooth 4.0 Headset 1 * USB Cable 1 * English / Chinese User Manual<br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>