1. Suitable for DIY enthusiasts, can be used as a DIY o music greeting card module 2. Light sensor control: when light is detected, the sound module automatically plays music; if not exposed to light, playback stops. Volume is adjustable 3. Module memory capacity of 8M, non-loop playback, with volume adjustment, and built-in Micro-USB interface 4. Suitable for toys, commemorative albums, photo albums, greeting cards, and similar applications 5. Stable performance and long service life Color: Silver & Green Material: Plastic Note: Appearance may vary slightly due to different product batches; this does not affect functionality Package Contents: 1 x DIY Light Sensor Sound Module (Only the above items included; other items not included) Note: Lighting effects and display differences may cause slight color variations between the image and the actual item. Measurement error allowed: +/- 1-3 cm