Features: Adjustable to any angles Full frequency FM transmitter Digital display Supports line audio input With power off switch(USB direct connect) Supports U Disk player Supports MP3,WMA format music Bluetooth hands - free calling. Bluetooth answer, hang up, reject, redial calls and other functions Bluetooth stereo music play Supports dual USB output voltage, the maximum output 5V/2A Automatic power-off memory function Specifications Rated Working Voltage: 12-24V Limit Working Voltage: 9-26V Work Rate Consumption: 1W Operating Temperature: -20 to 50 degrees Support Playback Format: MP3, WMA SNR: >60dB Frequency Response: 20Hz-15Khz Left and Right Channel Separation: >60dB USB Output: 5V/2A Bluetooth version:V2.1+EDR Bluetooth Sound Processing: with A2DP (Advance AudioDistribution Profile) Function Bluetooth Transmission Distance: 10m FM Transmitting Frequency: 87.5-108.0Mhz Color:Random Color Weight:95g Material:plastic Dimension:18.2*8.3*5.4cm key word:car MP3,FM transmitter,wireless bluetooth hands free,car bluetooth hands free,plastic plastic