JC-308 uses QCC3008 Bluetooth solution, supports: APTX/AAC/SBC/A2DP protocolColour: blackMaterial: plasticSize: 6.75x3.3x1.6cmPackage Contents:1 * Bluetooth moduleOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.