Product Features: 1.Auto On When you connect to the power, So its very good for to use in car or other you want it have auto on functions. 2.support U Disk play and TF Card play 3.Connect two devices: Support to connect with 3.5mm audio port and 2 audio port at the same time. 4.Hands-free Calling & Navigation Broadcast: A built-in microphone for hands-free calls; One simple button to answer/redial/hang up/reject calls. Besides, the Bluetooth car adapter supports broadcasting voice notification from existed navigation App, you don't need to look down the phone to safe driving. 5.Wireless Music Streaming: Stereo stream music to non-Bluetooth headphones and speakers. 6.Space-Saving Design: Ultra-compact and for convenient use with a variety of devices. Color: Black Material: plastic Package Contents: 1 x Bluetooth adapter 1 x 3.5mm audio cable 1 cable Only the above package content, other products are not included. Note: Light reflection 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.