Master IC: AC6926 Bluetooth IC: AC6926 Bluetooth version is version 5.0 Music format: MP3 / WMA / WAV / APE lossless format Radio FM frequency: 87.5-107.5 MHZ Support function introduction: support MP3 / USB / TF / LINE IN / FM / BLUETOOTH / remote remote connection / DC 5V or 12V (optional) 1 LED: digital screen display, display red, color screen display; 2 USB: Connect U disk (maximum support 32GB,not included) 3 VOL-: Short press is to select the previous song; long press is to decrease the volume 4 PLAY/PAUSE: Short press is the switch between pause and play; short press in the FM FM state is automatic 5 VOL+: Short press is to select the next song; long press is to increase the volume 6 MODE: USB / TF / FM / AUX / BLUETOOTH tone switching 7 TF: Connect TF memory card (maximum support 32GB,not included) 8 Infrared receiving module Colour: Black Material: plastic + metal Package contents: 1* decoder board 1* remote control Only 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. Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.