Feature:1. The decoding board supports Bluetooth 5.0 version + APP control and hands‑free calls.2. The decoding module supports audio input 3.5AUX+3PAUX, and support USB sound card function.3. The decoder supports folder selection play, and switching between USB/SD/Bluetooth/FM/AUX.4. The MP3 decoder supports USB/card switching, previous song, next song, volume adjustment, EQ, play/pause, stop, single song repeat, mute, shutdown, direct song selection.5. It supports bluetooth previous song, next song, volume adjustment, play/pause, mute. It also supports power‑off memory function.Specification:Item Type: Decoding BoardMaterial: PCBPanel Size: Approx. 92x35x29mm / 3.6x1.4x1.1inHole Size: Approx. 75x27x29mm / 3.0x1.06x1.14inCenter Spacing of Screw Holes: Approx. 80mm/3.15inPCBA Size: Approx. 71x29x20mm / 2.8x1.1x0.8inPower Supply Voltage: 5V or DC 7V-12V (different input terminals, choose one of the two channels)Current: 800MA-1ABattery: 1 x CR2025 .Package List:1 x Decoding Board1 x Power Cable1 x Connection Line1 x Remote Control