Features: 1* Flexible metal hose， suitable for all vehicles 2* As soon as the auto starts， screen displays its battery voltage. 3* Play music from USB disk and TF Card， TF Card reader4* Audio/music playback via Bluetooth A2DP5* Support Bluetooth HFP/HSP，A2DP/AVRCP Profiles6* Voice prompts the caller number when a call comes in.7* Frequency ranges: 88.1 ~ 107.9MHz8* Bluetooth Handsfree function: Full9* Duplex， DSP(Digital Signal Processing) 10* Technology， CVC technology for echo cancellation and noise suppression11* Charge for iPhone/iPad/Samsung/Htc/Google12* Power switch13* DC9~26V wide power supply suitable for variety of cars. Specifications: Frequency channels:88.1-107.9Hz Frequency response:20Hz-15KHz Transmit distance:5M SNR: 68dB Support file format: MP3/WMA USB Charge output: 5V/2.1A Music format: MP3/WMA/WAV/SBC Frequency range: 87.5-108.0Mhz Left and right channel separation:>60db Output Frequency: 20Hz-15KHz Rated current: 90mA Distorton:0<1% Operating consuption:<1W Operating Temperature:-10-70Degree Operating voltage range:DC 9-26V Working humidity:0-95% Bluetooth Version:Bluetooth v3.0 Bluetooth Profiles:HFP/HSP，A2DP/AVRCP Package Included: 1 x Car Kit handsfree Bluetooth FM Transmitter Modulator MP3 Player LCD Display 1 x Remote Control Unit. 1 x User Manual