GOgroove SolaceAIR Wireless Bluetooth Stereo Headset w/ Microphone + Extended 15 hr Battery for Motorola RAZR MAXX / Nokia Lumia 900 / Samsung Galaxy Nexus , S II , Brightside / HTC One X & more Ultra-lightweight and adjustable design combines comfort with high quality audio - Weighs 3 ounces and adjusts from 15" to 17" in diameter Built-in rechargeable battery provides 15 hours of audio and hands-free calls - charges in 3 hours by included Mini-USB cable Uses Bluetooth v2.1 + EDR (enhanced data rate) for dynamic SonusMAX, full-range sound with enhanced bass - 30 ft. working distance Equipped for hands-free calling, A2DP, AVRCP - On-board microphone, volume control and PAUSE/PLAY - ANSWER/END CALL control Guaranteed Quality - 3 Year Manufacturer's Warranty - NOTE FOR APPLE USERS: If you are having Bluetooth connectivity issues, please try resetting the Network Connections. Go to SETTINGS &gt; GENERAL &gt; RESET &gt; RESET NETWORK SETTINGS.