Applicable models: , motorcycles, electric vehicles, electric tricycles, moped, pedal , DV 12V models Function: bluetooths, voice prompt, call display, call voice report, mobiles phone call, bluetooths play, USB play, TF card play, FM radio, USB phone charge, AUX audio input, Burglar alarm, remote wireless remote control, LCD display, receive/hang up call, waterproof, mobiles phone charge Multifunctional design, waterproof, faster and easier installation, button front, more convenient operation. Waterproof motorcycle stereo speaker built-in bluetooths wireless and AUX wired function and power amplifier. You can the stereo music wirelessly and the call from the bluetooths mobiles phone, or any other device with bluetooths adaptor. Name: Motorcycle bluetooths Audio Working voltage: DC12V Power: 2 x18W Operating temperature: -30~60 Celsius Supports:TF card/ USB Supported: MP3 Wireless Controll Distance: 100m Frequency:100Hz-20KHz FM Frequency:87.5-108mhz colour: silver + black Material: plastic size: 3.5 inch Package Contents: 2*audio 1*remote control 2*support 1*harness Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.