TROND U2 Bluetooth Headphones V4.1 IPX6 Waterproof Wireless Sports Headphones Earbuds Headset with Mic (APT-X, CVC 6.0 Noise-Cancelling, Sweatproof), for Gym, Running, Jogger, Hiking, Exercise Premium Bluetooth 4.1 Headphones. Built with CSR 8645 chipset, TROND U2 ensures easy and fast pairing with smartphones, tablets and other Bluetooth enabled music devices. Apt-X 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 Sports Headphones Tested as IPX6 Waterproof. Well-constructed design ensures the headphones are water-/shock-/dust-proof; advanced nano-coating enhances the sweatproof to the next level  IPX6 waterproof, which is far superior to other competing headphones. Wireless Headset with Extended Battery Hours. TROND U2 features the high-density battery of 120mAh / 3.7V, which is bigger than most sport Bluetooth headphones in the market. Up to 10 hours of uninterrupted talk/playing time with one single charge and 12 days standby time. Can be fully recharged within 2 hours. Universal Compatibility. While pairing is very intuitive, TROND U2 can work seamlessly with your iPad, iPhone, iPod Touch, Android Smartphones, tablets, Bluetooth-enabled music players and Bluetooth receiver What You Get: TROND U2 Bluetooth 4.1 Sport Stereo Headphones, one USB-to-Micro USB charging cable, 2 pairs of premium ear cushions (small, large), Welcome Guide, 18-MONTH TROND warranty & 30-DAY money back guarantee.