TROND Bluetooth Headphones, Edge Wireless Bluetooth Stereo Sports Headphones Headset Earphones with Microphone, Noise Cancelling, IPX4 Sweatproof, for Gym, Running, Workout & Exercise - Green Advanced Technology. Latest Bluetooth 4.0 technology with A2DP enables you to enjoy high-fidelity stereo music and clear speech during hands-free calling within 10 meters away from your connected Bluetooth devices. Long Battery Hours. Up to 7 hours of uninterrupted talk/playing time with one single charge and 6 days standby while paired due to the built-in high-density battery (90mAh / 3.7V). Can be fully recharged within 1~2 hours. Minimal & Sweatproof Design. Weighed at 0.5 oz only and measured at the depth of 0.28, TROND Edge distinguishes itself from competing models by its lightweight and ultra-thin earpieces. Its been tested for IPX4 waterproof, and can endure dripping sweat or heavy rain Universal Compatibility. While pairing is very intuitive, TROND Edge can work seamlessly with your iPad, iPhone, iPod Touch, Android Smartphones, tablets, Bluetooth-enabled music players and Bluetooth receiver What You Get: TROND Edge Bluetooth 4.0 Sport Stereo Headphone, one USB-to-Micro USB charging cable(1.64ft/30cm), 2 pairs of ear cushions (S/L), 2 Pairs of double-layered ear cushions (S/L), 4 pairs of ear tips (S/S/L/L), Welcome Guide, 18-MONTH TROND warranty & 30-DAY money back guarantee.