Advanced Technology: With bluetooth 4.0 and apt-X tech, the headphones ensure high-fidelity stereo music and clear speech within 10 meters. Invisible nano-coating technology protect earbuds against sweat during running and workouts.High Quality Guarantee: Noise cancellation makes you enjoy a clear sound in noisy occasion. Powerful rechargeable battery provide 5 hours of Talking/Playing time. Rubber adapters, unique flexible design and custom earbuds ensure you get it perfect fit and remain stable in your ear.Easy Access: The simple user interface on one of the earphones allows you adjust the volume, play/pause, select songs and answer/hang up calls completely effortlessly. Universal Compatibility: headphones can work seamlessly with your iPad, iPhone, iPod Touch, Android Smartphones, tablets, Bluetooth-enabled music players and any device with bluetooth connection.