The 400 count LED Light String with Music Controller is a versatile decorative lighting system that combines ambient lighting with music synchronization. This innovative product features multiple lighting modes, music synchronization and human body induction capabilities making it perfect for holiday decorations, parties, and everyday ambiance enhancement. The seven functions are as follows: * 1. Warm white steady with music (Deck the Halls / First 20 seconds music) * 2. Multi-color steady with music (Holiday Happy / First 20 seconds music) * 3. Warm white flash in sync with music rhythm (Holiday Upbeat Mix / First 20 seconds music) * 4. Multi-color flash in sync with music rhythm (Jazzy Holiday / First 20 seconds music) * 5. Warm white and colorful flash in sync with music rhythm (Jingle Bells / First 20 seconds music) * 6. Warm white steady without music * 7. Multi-color steady without music