YKSH Sports Wireless Bluetooth 4.1 Noise Cancelling Headphone (Black) FLEXIBLE ,SECURE FIT: Lightweight and ergonomic design earhook makes it perfect for your daily exercise like running, jogging, cycling, driving or other outdoor sports. IPX4 Waterproof material design to withstand sweat or light rain AWESOME SOUND QUALITY AND NOISE CANCELLING: Latest Wireless Bluetooth V4.1 Technology with HD stereo makes you enable to enjoy every details of your favourite music. Noise reduction and echo cancellation functions enhance the voice quality and ensures your conversations are loud, clear and stable WIRELESS,HANDS FREE CALLING: No longer worry about the wire get in your way. With the build-in microphone, you can answer mobile phone calls as they come in by pressing the button on the ear piece DURABLE BATTERY AND BROAD COMPATIBILITY: Built-in rechargeable battery lasts up to 6-8 hours of talk / play time or 160 hours standby(in 2 hours full charging time), universally compatible with most Bluetooth-enabled devices. Effectively works with iPhone, iPad, Android phones, tablets and other Bluetooth enabled devices in the range of 10 meters PAIR WITH ANY 2 DEVICES: Allow to pair with two different bluetooth enabled devices. This is a great convenience for those who use two cell phones, without having to switch headsets every time between answering calls and listening music