VicTec Bluetooth 4.0 Noise Cancelling Wireless Sport Headphones with Microphone [Gym/Running/Sports/Exercise/Sweatproof] Earbuds Headset for iPhone 6S/6S Plus Samsung Galaxy S6 Edge Note 5 - Black With Bluetooth 4.0 technology, this wireless sport headphone provides high quality bass music and built-in microphone ensures clear speech within 10m (32.8feet) Nano-coating technology protects the earbuds against sweat when you are doing sports Ergonomic design provides you maximum comfort and stability, perfect for sports/running/exercise Supports 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 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