F5 Functions: Wireless in-car Bluetooth FM Transmitter is well compatible for iPhone Android and 12-24v size models LED screen provides clear display: song name incoming phone number and voltage of the car battery. Adopted advanced interference and noise cancellation technology - CVC technology creates full duplex sound and suppresses noise and wind. Colorful atmosphere lamp:When you use it a visual feast for you. Comes with a 5V-3.1A charging port which can charge most USB devices better charging performance( Unable to read USB sticks ) Feature: Bluetooth version: V21+EDR Frequency: 20h-20KHZ Sensitivity: -42dB+3db360 Voltage: 5v+/-0.5 Working current: 45mA (maximum standby current: 25mA (Max) Frequency: 2.402-2480ghz Effective distance: 5 meters Sensitivity: -92dBm RF output: 4dBm FM: 87.5MHZ-108OMHZ Transmit power: 87dBu/107dBuv Effective distance 2 meters Package Included: 1 xCar Blueteeth FM Transmitter 1 x User Manual Packing Safely in Retail Box. F6 Functions: 100% Brand new and high quality Multifunctional: Wireless connection(Bluetooth) Build in microphone FM transmitter+USB Charger+MP3 Player Supports Bluetooth hand-free phone call build-in microphone. Noise cancelling technology that allow for clear and crisp phone calls and music. With FM transmitter function supports adjustment. Full-frequency covered 87.5-108.0MHz. Allowed to accept MicroSD card up to 32G and play playing music on MP3/WMA form. Come with 2 USB charging ports (5V/3.1A and 1.0A) for charging your smart phone or tablet. Feature: Product model: Car F6 Support expansion: U disk/TF card 64G Transmitting frequency: 87.5MHZ-108.0MHZ Power supply: DC5V Output current: 3.1A + 1.0A. Play method: FM broadcast Product size: About 47.9*37.8*87mm Display: LED display Product material: ABS Effective distance: 10 meters Applicable models: 12V-24V large and small cars Storage capacity: no memory FM frequency modulation function: Yes Playing time: with car PC interface type: USB Power supply voltage: 12-24 (V) Color: Black. Package Included: 1 xCar Blueteeth FM Transmitter 1 x User Manual Packing Safely in Retail Box.