Habor Bluetooth Headphone V4.0, Bluetooth Wireless Sport Headphones with Microphone for Bluetooth-enabled Android IOS Smart Cell Phones Advanced Technology. With Bluetooth4.0 technology, this wireless sport headphone provides high quality bass music and built-in microphone ensures clear speech within 10m. Nano-coating technology protects the earbuds against sweat when you are doing sport. Hands-free Calls & Ergonomic Design. Just press one button to answer/reject/redial calls, you do not have to take out your cell phone from your pocket when running. Soft earhooks and earbud cushions with different sizes fit for different ear canals. Ergonomic design provides you maximum comfort and stability, perfect for sports/running/exercise. Strong Battery Endurance. Built-in 80mAh lithium-ion polymer battery, up to 5 hours playing/talking time and only 2 hours charging time, enjoy longer music time during running with less charging time. Wide Compatibility. Compatible with iPhone, iPad, iPod Touch, Bluetooth-enabled Android Smartphones, tablets, music players and any devices with Bluetooth functions. More Features. Support battery status display on IOS devices. Allowed to adjust volume/previous or next songs, play/pause, answer/hang off/reject/redial calls. Support one- operating-two function, which means it can connect to two mobile phones at the same time.