WM8978G Audio Codec: Integrates high‑quality stereo DAC/ADC for clear and low‑noise audio playback and recording. I2S Audio Decoding Interface: Supports standard I2S and compatible digital audio interfaces for easy connection to common MCUs and MP3 decoders. MP3 Music Player Development: Specially suitable for MP3 player projects, DIY music players, and embedded sound systems. I2C Control Interface: Allows flexible configuration of internal registers such as volume, EQ, input selection, and power management via I2C. Integrated Headphone Amplifier and Wide Power Supply Compatibility: Onboard headphone driver provides sufficient output power for direct connection to headphones or small speakers, designed to work with common development platforms and power rails used in embedded systems. Compact PCB Design: Small, space‑saving module suitable for portable devices and tight enclosures. Applications: DIY MP3 music players and portable audio devices, embedded audio development and prototyping, digital audio systems with I2S interface, educational development boards and learning kits, custom audio projects, media centers, and Internet of Things devices with sound output. Color: Black Material: Metal Package Contents: 1*module 1*pin header 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.