Overview: Sync audio from your MP3/mobile device Stereo sound Bluetooth 2.0 Class 2 Device Supports A2DPDual operating modes: hands-free/music Battery time: up to 10 hours in Talk/ Music Mode & up to 200 hours in standby (manufacturer rated) Compact clip-on design Standard music control buttons Built-in rechargeable lithium batteries AC charger & earbuds included Comes in black Specifications: Dimensions: 0.39 in x 1.18 in x 0.51 in Weight: 4.87