Multi-function: Not only a Bluetooth FM transmitter but also read MP3 files from the TF card which support MP3/WMA format.</br>A2DP Crystal Clear Sound: Advanced audio codec chip support A2DP and guarantees high quality sound. Compatible with any phone(IOS or Android above version 2.3) with Bluetooth function.</br>Dual USB Charging: With the max output 5V/4.2A charging your cellphones tablets and other devices as car charger.And QUICK CHARGE 2.0 can charge your devices more quickly.</br>Hands-free Calling: With this wireless FM transmitter you can conveniently answer/ hang off/reject/redial call through hands-free function.</br>Flexible Placement: With included magnetic base or removable sticky pad you may stick it on any surface inside your car.</br></br>Product Description</br></br><p><b>Product specification:</b></p> <p>Bluetooth version: V3.0</p> <p>Rated operating voltage: 12V to 24V</p> <p>Working voltage limits: 10 to 26V</p> <p>Car charger USB output: 5V / 2.1A Max</p> <p>FM frequency: 87.5 to 108MHZ</p> <p>Power consumption: 1W</p> <p>Operating temperature: 0 to 50 degrees</p> <p>Support playback format: MP3</p> <p>SNR: more than 60dB</p> <p>Distortion: less than 0.1%</p> <p>Frequency Response: 20Hz-15Khz</p> <p>Left and right channel separation: more than 60dB</p> <p>BT Version: version 3.0</p> <p>Bluetooth sound processing: With DSP technology and A2DP(Advance Audio Distribution Profile)