Product name: 2.0 channel Bluetooth audio power amplifier module Bluetooth version: 5.0 (unobstructed, 15 ) Input : AUX+Bluetooth Number of channels: 2.0 channels (left channel + right channel) Power amplifier chip: TDA7498E Adapter power supply: DC12~32V (less than 9V under protection, 12V power supply can also be supported) Adapted speakers: 30-200W, 4-8Q Output power: left and right channels 150W Protection mechanism: anti-reverse connection, undervoltage, overheating, overcurrent, short circuit protection Tip: When the audio signal input is enough and the power supply /current is enough, there will be enough output power The higher the power supply , the higher the output power, and the lower the speaker impedance, the higher the output power make that the power of the adaptor is the actual working power of the amplifier Material: plastic colour: black Package Contents: 1 x Audio Amplifier Board 1 x Screwdriver 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.