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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. 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 make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!