Function:Bluetooth connection Power supply:8V-24V Product model:-042 Product Name:Tricycle Radio FM frequency band:87.5-108MHz USB playback:supported Operating temperature:-35C-80C Support audio:MP3/WMA/WAV/FLAC/APE Application fields:tricycles, four-wheeled vehicles, engineering vehicles, agricultural machinery vehicles Different batches may cause differences in product appearance, text, and color, which will not affect the use Colour:Black Material:ABS Size:175x52.5mm,Screw size:132mm-136mm Package Contents: 1 * Audio Player 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.