JQ-D102BT With Amplifier Recording Calls MP3 Bluetooth Decoder Board Module 1. Dual decoding supports music in MP3WMAWAVFLACAPE lossless decoding format 2. Support bluetooth call function, power off memory function 3. Support MMCSDMMA and other cards, support USB interface (U disk) 4. Support external audio source input LINE IN 5. Support radio FM, search frequency band (87.5MHZ-108.0MHZ) 6. Mobile phone Bluetooth connection matching fast, low-power decoding scheme 7. Application areas: speakers, tricycles, vans, buses, trolley speakers, power amplifiers, etc. 8. Bluetooth transmission distance: within 20 meters 9. Radio channel: 87.5Mhz-108Mhz 10. Voltage input: DC 5V 11. Amplifier: 2 x 3W 12. Function: Bluetooth 5.0+lossless decoding+call+radio FM+AUX+USB+TF card 13. Speaker: 4 ohms, 3W 14. Buttons: three-button control, VOL-AUTOVOL+ 15. Dimensions: 71 x 22mm