The Avatar Controls C9 exterior Christmas lights offer smart app and remote control, allowing for customization of scenes, music sync, brightness, speed, and color changing. The lights can be dimmed from 1%-100% without the need for a dimmer. They feature DIY modes with various lighting effects and adjustable speeds, creating a relaxed and comfortable atmosphere. The lights also have music rhythm modes, changing colors with the rhythm or melody. They have timing and memory functions, and can be expanded up to 98.4ft with connectors. The lights are UL certified, low voltage, and waterproof. They are suitable for indoor and outdoor decoration, perfect for weddings, parties, and Christmas decorations.