Music Rhythm Lamp: This Dancing Ferrofluid Music Rhythm Lamp is a decorative lighting device that responds to sound. When music plays, the ferrofluid moves in rhythm with the audio, creating a dynamic visual effect. The intensity of the movement varies with the volume of the music. Audio Visual Experience: The lamp uses ferromagnetic fluid that reacts to audio input, allowing it to respond differently to high and low frequencies for an engaging audio-visual display. Interior Decoration Light: Simply plug in and turn on the switch for easy operation. Premium Quality: Constructed with high-quality PP material, this ferrofluid lamp is durable and built for long-term use. Holiday Gift: A unique decorative lamp ideal for holidays such as Christmas or Halloween, perfect for those who enjoy science-inspired home decor, adding a modern and colorful touch to any space. Specification: This product does not contain batteries Size: 11.5cm x 11.5cm x 7.6cm / 4.53 inch x 4.53 inch x 2.99 inch Package Includes: 1 x Dancing Ferrofluid Music Rhythm Lamp Note: Please allow slight variations of 1-2cm due to manual measurement.