Features: Support A2Dp and and built-in a 5W speaker. Smart voice system timely reminds if incoming calls, Bluetooth connection, mode switch. Built-in high definition microphone enables you receive calls easily and makes your hands free. Built-in rechargeable battery, long working hours, safe and convenient. It can streams incredible stereo sound with full range output, crystal clear articulate high end. Perfect tone quality, pure, clear and clean. The beautiful sealed silicone cases and interface design ensure, water resistant, shockproof, dustproof, suitable for outdoor travel. It supports any Bluetooth-enabled devices such as smartphone, tablet, Pda, iPad, MP3 player, PC, laptop, etc.