Function via Bluetooth-enabled devices. Compatible only with Alpine radios. No functional limitations to the car radio. Allows connection of an external o source. Stream o from your smartphone to your car stereo. Pair your phone with the Bluetooth module and select Aux on your radio to enjoy music through the car speakers. Works with iPod, , 5/5C/5S/6/6 Plus, , HTC, , Nokia, and other Bluetooth-enabled phones or tablets. Features Bluetooth 4.0 version and is compatible with Bluetooth 2.0, 3.0, and 4.0. Supports MP3, WMA, WAV, and FLAC high-quality o format decoding. Supports DSD large-capacity transmission. Easy installation. Installation method: Connect red power cable to 12V+, black power cable to 12V-. Bluetooth module connector: 12V. Cable length: 20cm (Approx.). Color: Black. Material: Plastic. Package contents: 1 x Bluetooth AUX o cable (with OPP bag). Only the above package content is included; other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3cm.