LM386 chip: This module is based on the LM386 chip, with strong scalabilityLow noise: clear sound output, low noise development, bring better listening pleasureSmall: The audio amplifier is small, the speaker range is 0.5-10W, and the distortion is small3-12V low consumption: 3-12V low consumption, more cost-effective than most similar productsPurpose: This module can be used for audio amplification, earphone amplification, signal amplification, electret pickup, etc..PCB size: 42 x 30 mmMaterial:Metal colour:Green Package Contents:1 * Amplifier moduleOnly the above package content, other products are not included.Note: Light 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.