1. 2.1 Channel Bluetooth Power Amplifier Board, 50W+50W+100W, Aux+Bluetooth+USB Button Switching Mode 2. AUX Audio Input, Track Wheel Button To Switch Modes And Songs, 3. USB Input Playback, Output With Filter, Hifi Sound Quality, High Fidelity, High-Definition Sound Quality 4. Easily Connect Your Audio System 5. High Definition, Low Distortion, Hifi Sound Quality 1. Model: -AM100 2. Bluetooth version:5.1 3. Name: 50W*2+100W microphone and audio machine 4. Power amplifier chip: TPA3116D2 5. Bluetooth transmission distance: 15m 6. Audio input: Bluetooth+AUX+U disk+USB sound card+MIC sound 7. Frequency output: left channel 50W + right channel 50W + subwoofer 100W 8. Adaptable power supply; DC 12-24V, 8A (cannot be connected to AC power) 9. Adapted speakers: left and right channels 20-50W, 4-8Ω subwoofer 20-100W, 3-8Ω dual-way volume adjustment: 1. Background music volume adjustment with multi-function button (single click to pause, double click to next song, long power on/off) 10. Protection mechanism: input anti-reverse connection, over-temperature, over-current, short circuit, anti-static protection 11. Function: Dual microphone input 12. Support WuzhiAudio APP. Modify Bluetooth name and password settings, adjust volume, turn on/off beeps, lullabies, firmware upgrades, and other products 13.Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use 14.Colour:As Shown 15.Material:ABS Package Contents: 1 Set Of Amplifier Board Casing 1 Set Of Screw Pack Mounting Accessories Only 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.