Wireless Bluetooth Car FM Transmitters MP3 Player, USB Charger Handfree Kit Features : Adjustable to any angle, and suitable for all types of vehicles Support U disk player It supports MP3, WMA music format Bluetooth answer, end, reject, redial calls and other functions Bluetooth stereo music playback Echo cancellation and noise suppression (CVC) during a call It supports dual USB output voltage, maximum output 5V/2.1A Automatic power-off memory function Full Frequency FM Transmitter Digital display Audio input helpline With Power Off (direct connection of USB) Two USB Port Specification : Operating voltage: 12 V Working voltage limits: 9 ~ 26 V USB output: 5V/2.1A Working temp: 0-50 Support game format: MP3 WMA Bluetooth sound processing: A2DP (Advance Audio Distribution Profile) Bluetooth Transmission Distance: 10M-15M Bluetooth microphone effective range : 0.5 ~ 2 m FM transmission frequency : 87.5 ~ 108 MHz FM Transmitter Mode: Stereo Digital PLL Lock SNR :> 60dB Distortion : <0.1% Frequency response: 20 Hz-15 KHz Left and right channel separation: 60dB Bluetooth: V2.1 Package Contents: 1 x Wireless Bluetooth FM Transmitter Car Dual USB Charger MP3 Player Handsfree Call 1 x Audio cable 1 x User Manual