TM036 FM TRANSMITTER WITH BLUETOOTH USB AUX-IN &MICROSD READERBluetooth V2.1 support HFP, A2DP and AVRCP204 channels optional from 87.6–107.9 MHzUSB charging port for charging iPod/ iPhone, iPad and other mobile devicesSD Card up to 32 GBFrequency selection: 87.6–107.9 MHzInput: DC 12/24 VUSB port: Charging output 5 V/1 A (5 W), USB flash drive inputAUX input: 3.5 mm stereo jackFormat: MP3Range: up to 3 mWeight: 0.036 kgHeight: 5.8 cmWidth: 4.3 cmLength: 8.5 cm..