Feature: 1. Dual USB car charger ports, wireless BT FM radio adapter, dual USB ports, dual charging at the same time through this car BT FM transmitter. 2. V5.0 BT Fm transmitter, stable BT and FM connection to transmit music directly from the mobile phone to the car audio system. Compatible with most mobile phones and BT enabled devices 3. Hands‑free call, provide stable connection, built in microphone, automatically switch to hands free mode. One click answer,reject,raise hand,recall. Make your driving safer and more focused. 4. Clear music streaming, with anti interference performance and CVC technology. Automatically connect to memory pairing when power on. Let you enjoy clear podcasts and 3 stereo music playback modes. 5. Extensive compatibility, compatible for iPhone, for iOS tablet, for Samsung, for HTC, for Blackberry, for Sony, tablets and other BT enabled devices. The transmitter has a wider range, from 87.5MHz to108 MHz. Specification: Item Type: Cigarette Lighter Material: ABS Interface: High Speed USB2.0 Power Supply: DC12V to 24V Support File Type: MP3,APE,FLAC,WAV Working Current: DC12V FM Frequency Range: 87.5 to 108MHz Signal to Noise Ratio: 85dB (FM: 65dB) Harmonic Distortion: <0.05% (FM<0.1%) Working Temperature: 0℃-60℃ BT Version: V5.0+EDR Launching Distance: Approx.5m/16.4ft. Package List: 1 x Car Bluetooth MP31 x Manual