HD SOUND WITH DEEP BASS AND CLEAR TREBLE. Applying latest Bluetooth V4.1 CSR technology with CVC 6.0 noise suppression technology. Built-in mic connects you with your friends and family while doing any sports. LONGER PLAY TIME UP TO 8 HOURS. Enjoyment of music for up to 8 hours and 240 hours stand-by are assured by improved lithium polymer battery. TRULY SPORTS EARBUDS WITH IPX6 WATERPROOF RATING. Ergonomically designed flexible ear hooks with IPX 6 waterproof rating ensures your headphones stay comfortably and firmly on your ears. Nano waterproof technology protects your heaphones from water damage and corrosion of sweat. NOISE CANCELLATION - CVC 6.0 noise technology helps you focus on what you are doing without disturbance of outter noise. UNIVERSAL COMPATIBILITY AND ENHANCED PAIRING: Compatible with most smartphones and other Bluetooth-enabled devices. Pairing is seamless and easy to set up.