Fangrui Product Details 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 Display Operating Voltage: 4.5-5.0v (need Regulated Power Supply) Standby Current: 20ma Operating Current: 30-180ma Audio Output Signal Po