COMPATIBILITY: Charging is compatible with any phone using a micro USB 2.0 or 3.0 charging port. Bluetooth compatible with any device with bluetooth compatibility. Vehicle must have a Aux-in connection. Charge and Stream music via Bluetooth with the MusicPlay & Charge Kit. For car-stereos with 3.5 mm aux-in but NO support for BT audio/music streaming. Plug in to the vehicle's aux-in to hear Music， GPS from favorite Apps through your car-stereo speakers. Compatibility: Bluetooth enabled Android phones. Samsung Galaxy S4， S5 & Note 3 & 4， HTC's， LG's， Nexus， Moto's & Sony's. To operate， pair charger with phone and set BT connection to "media only". Plug in the 3.5 mm aux-out "curly cable" from charger to vehicle aux-in. Music & App sound will play to car-stereo speakers. BT "auto connect" supported on most Android phones. The Bluetooth car-charger may also be used for hands-free calling， microphone is built-in. Select "call" profile to activate. Works well at lower speed but the background noise cancellation is NOT optimized for highway driving (this would make the Kit 2 x price) The iBOLT Bluetooth Charger uses a micro USB 2.0 charging output. Integrated into the charger is bluetooth technology and a 3.5mm Aux-Out cable. This combination allows you to play your music/GPS audio through your car speakers while charging the device.