Support Bluetooth hands-free phone calling via its built-in microphone.With sticky base, allows you to place it on car dashboard for easy accessibility.Dual USB Car Charger:USB port on the plug supplies a current of up to 2.1A to charge all the phones and tablets. Such as iPod/iPhone, Samsung, iPad, Nokia and other mobile devices.Compatibility with Bluetooth enabled devices,such as Samsung S6/S5S4/Note5/Note4/Note3, iPhone 6/iPhone5/iPhone4, LG G4/G3/G2/, SONY Z3/Z2/Z1, ect.Color: BlackMaterial: ABSBluetooth: Bluetooth 4.0Bluetooth profile HFP, HSP, A2DP, AVRCO Power supply for the car charger DC 12V/24V Car charger output 5V/1A,;5V/2.1A Bluetooth Effective range:0-10 meters Support TF card up to 32GB Music format:MP3 format FM Frequency range: 87.5-108.0Mhz How to use it:1. Open the car FM Radio speaker.2. Insert the car charger into the cigarette lighter in the car and keep the FM transmitter and the car FM Radio at the same frequency3. Open the bluetooth of the bluetooth transmitter and pair with your phone.4. Connect with cellphone via bluetooth is no password (Please code 0000 if need)5. Insert a TF card which containing MP3 files into TF card slot of this unit accordingly, it will play and transmit the MP3 music to car FM Radio.6. 3.5mm audio Line-in function: Use the provided audio cable to connect an MP3/Mp4 players or another external device to the 3.5MM audio input of this unit, when using this function, please take out TF card, and external devices's music will transmit to car FM Radio.Package Content: 1 x Bluetooth FM Car Kit1 x Audio Cable1 x Car Charger1 x User manualNote: Light shooting 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.