Ecandy Wireless Bluetooth Headphones with Mic for Running, Sweatproof Earphones,Noise Cancelling Headsets - Black Amazing Sound: Crystal clear voice sound with strengthened superb bass resonance and true surrounding stereo for music and video, especially suitable for Jazz, Rock and Pop Long battery life: Built-in high performance polymer 80mAh battery, up to 4-6 hours talking/playing time, and about 150 hours standby time. Newest Advanced Technology: Perfectly support advanced apt-X Codec, feel free to enjoy HD true stereo music and video with your Smartphones and Tablets Most Comfortable Wearing: Ergonomic in-ear design with medical grade silicone ear gels and stabilizers, providing you the most comfortable wearing in your ears for full day use and never fall off when workouts Worry-Free Warranty Service:EcandyDirect offer you a 12 month worry-free warranty.