1. Large capacity 8MB memory, supports USB music download 2. Supports 3 playback modes: loop playback, single-track playback, and next-track playback; playback controlled via push button 3. Compatible with ambient lighting; features high-quality built-in speaker and adjustable volume 4. Rechargeable design; supports custom audio upload 5. Wide application: suitable for music greeting cards, gift boxes, photo albums, toys, decorative walls, and more Power supply voltage: 4.2–5.2V Interface: USB Type-C (for power supply and audio download) Motherboard size: 49 mm × 27 mm Speaker size: 36 mm diameter Button size: 23 mm × 13 mm Ambient lighting can be added by soldering LEDs to the designated pads on the board, observing correct polarity. Playback modes: - Loop playback: Press button once to start continuous playback from the beginning; press again to stop. - Single-track playback: Press button once to play the full track once; press again during playback to stop early. - Next-track playback: Press button once to play one track; press again during playback to skip to the next track. Color: As shown Material: Plastic + Metal Package contents: 1 × Voice module Note: Color appearance may vary slightly due to screen settings and lighting conditions. Dimensional tolerance: ±1–3 cm.