1. Large capacity 8MB memory, supports USB music download2. Supports 3 playback modes, key controlled playback3. Can be equipped with ambient lighting, high-quality speakers, and adjustable volume4. Rechargeable, customizable music5. Wide applicability, suitable for music cover walls, greeting cards, gift boxes, photo albums, toys, etcPower supply voltage: 4.2-5.2V power supplyInterface: TYPE-C (5V power supply/audio download interface)Motherboard size: 49mm x 27mmSpeaker size: 36mm diameterButton size: 23mm x 13mmNote: Atmosphere lights can be added, and welding should be done according to the silk screen solder pads on the board, paying attention to the positive and negative poles.Play mode: Loop playback: the button once to start looping the stored music from scratch, and the button again to stop playback.Non loop playback: the button once to start playing the stored music from scratch and then stop. the button again during the playback process to stop playing.Next song playback: the button once to play music, stop after playing the music; Pressing the button during playback switch to track.Color: As ShownMaterial: Plastic+MetalPackage Contents:1 set * Voice moduleOnly 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.