Piner Wireless Bluetooth Headphones Best In-Ear Noise Cancelling Headphones with Microphone for Running, Sports & Exercise, Mini Lightweight Sweatproo(Black/Green) Comfortable and secure design fits perfectly to your ear; the cable smartly stays out of your way when running, jogging or exercising Two powerful audio drivers on each side offering balanced audio and crystal clear sounds, providing a comfortable and dynamic listening experience. Latest Bluetooth 4.0 technology; easy and fast pairing with smartphones, tablets and other Bluetooth enabled music devices; aptX codec provides pure, CD-like high quality sound for compatible devices. CVC Noise Cancellation 6.0 technology reduces outside noises, enable clearer sound from microphone, you get high quality, hands-free phone conversation even on the street or inside shopping mall Up to 5 hours of continuous talking / music time and up to 175 hours of standby with a single charge, so you have less time charging and more time doing