Wireless Earbud Headset - For Cycling, Jogging, Running: Sweatproof, Comfortable, Noise Cancelling and Durable - Works with iPhone, Android and All Bluetooth Enabled Devices Premium speakers produce excellent sound quality, powerful bass and are naturally noise cancelling Bluetooth 4.0 technology provides high quality sound at up to 10 meters Built for exercise: made to withstand sweat, and designed for comfort Extra long Battery life allows for up to 8 hours of continuous music/talking and up to 200 hours of standby time Fits everyone: comes with multiple sizes of ear cushions and ear hooks