Features:1. Fast transmission speed: The data transmission rate of this product is increased to three times that of current technology, and the transmission speed is very fast.2. Strong Compatibility: Can be compatible with all A2DP stereo devices, for android, for ipad, for iPhone4, for iPhone3G/3GS and other products for apple.3. Practical: This product supports audio playback and call answering, which is very practical and suitable for use in cars. Descriptions: This product supports all speakers with U disk port for music playback. You can also connect the car USB port to play music on mobile phones, tablets, MP3, etc. and reduce the frequency of insertion and drawing of U diskSpecifications: Material: PlasticColor: Black, White (Optional)Product Size: 5*2*2CM Power Supply: USB 5V Output: USB Port, 3.5mm Audio InterfaceReceiving Distance: 10mPackage Included:1 x Wireless Receiver Adapter1x3.5mm Audio CableNotes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee that the style is the same as shown in the pictures.2. Due to different personal measurement techniques, there may be a physical error of 1-3cm. Thank you!