100% Brand New And High Quality FM transmitter sync the device to an FM station on your cars radio to use audio functionality. Dual USB ports for device charging. Including a 3.1a port for high speed charging Built in Bluetooth for music playback and calls. Built in Microphone Multifunction buttons: Answer / Hang up calls / Skip tracks / Change Frequency Play music and audio files directly from a micro sd / TF card or USB Car battery voltage check Specifications: Bluetooth Version: V4.0 Voltage: 12-24V Output Voltage: Port 1-3.1A Port 2 1A (Max 3.1A if both ports are being used) Bluetooth Distance: 5m max Compatibility: Will work with all phones and devices with bluetooth functionality. Will transmit to all cars with a FM radio Packageinclude:1x Car Bluetooth Charger Note: 1. Due to the different monitor and lighting effect, the actual color of the item may be slightly different from the color shown on the pictures. 2. Please allow 1-3cm error due to manual measurement. (1 inch = 2.54 cm) Thanks for your support :)