1. It is a multifunctional high-fidelity stereo sound audio decoder board which integrates Bt audio decoding, TF card, U disk music file decoding, computer USB sound card, LINE input.2. 2.8-inch 320x240 pixels IPS color screen to do playback status and decoding related information display. Simultaneously support analog audio and digital audio (I2S) output function.3. 3.5mm stereo line-in connector for inputting audio signals from cell phones, computers, MP3 players and other lines.4. Support /AAC audio transmission protocol in Bt mode, support Bluetooth lyrics song title and other ID3 information display, and support spectrum display.5. Built-in equalizer preset 7 EQ scenes + 1 custom EQ scenes, can be very good with the speakers and personal listening preferences to choose and adjust to their own sound.Support Simplified Chinese, Traditional Chinese and English displayOperating voltage: 4.5-5.0V (need regulated power supply)Standby current: 20mAOperating current: 30-180mAAudio output signal power: 50mWAudio output signal-to-noise ratio: SNR104dbOutput audio signal level: 2.8Vp-pNumber of audio output channels: 2 channelsAudio hardware bit width: 24bitBluetooth receiving distance: about 10 metersBluetooth version: V5.3+BR+Screen specification: 2.8 inch 320x240 pixels IPS screenColour:BlackMaterial:Plastic + MetalPackage Contents:1 x Decoder board module1 x hexagonal wrench4set x screws + nuts1 x Remote control4 x cableOnly 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.