Fangrui Product Details Equipped With Wireless Bt, Radio, Memory Card / Usb Audios Supports Cards, Usb Drives, Mobile Phones, Computers, Mp3s And Other Devices.support Wireless Connection. Usb Card Interfaces Built-in Mp3 Player. Download Your Favorite Music In Usb Or Card, And Enjoy Your Favorite Music. You Can The Treble And Woofers At The Same Time. Remote Control: Full Function. Give You A Wonderful In-car Entertainment. In Use Product Name: Power Amplifier Panel Voltage: 3.7v Lithium Battery Charging Dc 5v Charging Interface Output Power: 30w-120w Amplifier Use:car Audio System Colour: Black Material: Metal Package Contents: 1 X Car Amplifier Board 1 X Remote Control(requires Button Battery Cr2032) 1 X Speaker Cable 1 X Fm Radio Antenna Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection 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.