1.It can be adjusted at any angle, suitable for all types of vehicles. 2. Support digital tube display.3.Bluetooth hands-free call. 4. Support Bluetooth stereo music playback.5. Echo cancellation and noise suppression (CVC) technology during a call.6.Support dual USB to supply power to other devices, with a total output of 5V/4.2A.7. Stereo Bluetooth and FM transmission technology. 8. Automatic power-off memory.technical parameter:Sound processing: with A2DP (Advance Audio Distribution Profile) functionRated working voltage: 12V24VUltimate working voltage: 9-26VUSB1 output: 5V/2.1A MAXUSB2 output: 5V/2.1A MAXSupport music format: MP3/WMASupport U disk capacity: 1G-32GWorking temperature: 50 degreesBattery voltage accuracy: error ±1VSignal to noise ratio: 60dBDistortion: 0.1%Frequency response: 20Hz-20KhzLeft and right channel separation: 60dBTransmission distance: less than 10MMicrophone effective distance: 0.5-2MFM mode: stereo digital PLL frequency lockFM transmitting frequency: 87.5MHz-108.0MHzEffective launch distance: 2MMaterial:ABScolour:BlackPackage Contents:1 x car playerOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.