ITEM NAME:Mini DC 1.8-12V TDA2822M 2.0 Channel Stereo Audio AUX Amplifier Board Module AMP.DC 1.8-12V TDA2822M 2.0 Channel Stereo Mini AUX Audio Amplifier Board Module AMP. Input Interface: 3.5mm Audio input. Output Power: 0.1W-5W ; 4-32 Ohms. Quantity: 1 Pc. Size: 5.2x3.2cm/2.05x1.26".