FM Transmitter Bluetooth-compatible 5.0 Car Kit LED Display Dual USB Car Charger 4.1A 2 Port USB MP3 Music Player Support TF/U DiskFeatures: 1.Support Bt hands-free phone calling via its built-in microphone. 2.Support A2DP function. Music will be played directly while the mobile phone is connected. 3.Built-in dual USB 5V / 4.1A output, 3.1A USB port support smart charging, it is available for charging most kinds of devices in car. 4.LCD display of frequency and voltage. 5.English voice number prompt. 6.Support SD/TF memory card and U disk, can play music files on MP3/WMA/APE/FLAV/WAV format. 7.With a support of FM channels, this car MP3 wireless FM transmitter lets you take a break from your regular music. 8.Plug the MP3 player into cigarette lighter of your car directly, easy to use and carry. 9.Echo cancellation and nosie;10.Stereo bt and FM transmitt11.Automactic power-off memory fuction; Specification: Type: Car MP3 player Material: ABS Display Color: Black Bluetooth-compatible Version: Bt 5.0Files Supported: MP3/WMA/APE/FLAV/WAV FM Frequency Range: 87.5-108.0MHz Effective Distance: 5m/16.4ft Working Voltage: DC 12V-24V USB Output: 5V / 3.1A (Smart IC), 5V / 1A Port: 2*USB 2.0; 1*TF card input, up to 32GB max (no include TF card) Item Size: 3.8*4.6*7.8cm / 1.5*1.8*3.1"'""'" (L*W*H) Net Weight:aboout 0.033kg / 1.2oz Package List: 1*Car player 1*English user manual