LM386 chip: This module is based on the LM386 chip, offering strong scalability Low noise: Provides clear sound output with low noise, delivering an enhanced listening experience Compact design: The audio power amplifier is small in size, supports speaker power range of 0.5-10W, and features low distortion Low power consumption: Operates at 3-12V, providing efficient power usage Application: Suitable for audio amplification, headphone amplification, signal amplification, electret microphone input, and similar uses 100% PCB size: 42 x 30 mm Material: Metal Color: Green Package Contents: 1 x Amplifier module Note: The package includes only the items listed above; other accessories are not included Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm