Car Bluetooth Wireless Audio Receiver Bluetooth Audio Device Accessory for BMW E60 E63 E64 E65 E66 E81 E82 E87 E70 E90 E91 E92 Features: Plug-and-play, easy installation. Functionality through Bluetooth-enabled devices. Car radio has no functional limitations. Allows you to connect external audio sources; It can stream from your smartphone to your car stereo. Pair your phone with our Bluetooth module and select Aux from your radio. You can enjoy the music from your phone through your car speakers. Suitable for all mobile PADs with Bluetooth capability. Red cable. 12V (positive). Black cable. 12V - (negative) Cable length: approx. 25 cm Wire core material: tinned copper wire Number of wire cores: 6 Maximum wire outside diameter:7.5(mm) Main use: Audio playback audio Thickness of protective cover:0.25(mm) Color: Black Material: plastic Package Contents: 1*Bluetooth AUX audio cable note: Lighting shooting and different monitors may cause some differences between the color of the items in the pictures and the real thing. The allowable error of measurement is +/-1-3 cm.