This Bluetooth headset， compatible devices with Bluetooth， such as mobile phone. Bluetooth V4.0 version， can be simple pairing safely.<br> <br> Features:<br> Bluetooth headset， compatible devices with Bluetooth， such as mobile phone.<br> Connect to 2 phones simultaneously.<br> Built-in microphone， allows you to have wireless telephone conversations.<br> Support listening and answering the call， true stereo sound.<br> Can be adjusted up and down， convenient to use.<br> Support tell number when coming a call and callback the last number.<br> You can change the Chinese and English by holding the two volume keys ("+ "and "-")at the same time.<br> Power display for iPhone/Xiaomi.<br> When you first use， you must connect devices woth the buletooth， the second time you use and after， the devices will connect automatically.<br> DSP noise reduction.<br> Bluetooth V4.0 version， can be simple pairing safely.<br> The QY7 is a perfect headset to help you keep your hands free whether you are working in the office or driving in your car.<br> In-ear design， lightweight and portable.<br> It is a sports headset.<br> <br> Note:<br> The best distance of product working is less than 15m.<br> <br> Specifications:<br> Color: Black + Green<br> Bluetooth: V4.1<br> Material: PC + PE + Silicon<br> Effective range: about 15m / 33ft<br> Standby time: up to 80 hours<br> Talk/music play time: about 4-6 hours<br> Charging time: about 1-2 hours<br> Battery: 85mAh<br> Product weight: Approx. 21g / 0.7oz<br> Package size: Approx. 19.5 * 9.5 * 4.5cm / 7.7 * 3.7 * 1.8in<br> Package weight: Approx. 77g / 2.71oz<br> <br> Package List:<br> 1 * Bluetooth Headset<br> 2 * Big earbud<br> 2 * Small earbud<br> 2 * Ear-hook<br> 1 * USB Charge Cable<br> 1 * User Manual (English)<br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>