Feature:1. DANCING FERROFLUID: The ferrofluid dances in rhythm with your music, creating a mesmerizing visual display that moves in sync with the music, making every listening experience more captivating2. DIY EXPERIENCE: Comes with 12 colorful pens, allowing you to personalize the record product's backdrop, making it a unique piece that reflects your creativity while enjoying the music3. VERSATILE APPLICATIONS: This magnetic fluid sound visualizer serves multiple purposes: it can be a musical companion, a desktop gift toy, or even an engaging metronome placed next to musical instruments4. IDEAL EDUCATIONAL GIFT: The detachable ferrofluid bottle inspires a passion for science, making it a great desktop toy for aspiring engineers and scientists, enhancing their collections with the wonder of magnetic fluid5. CAPTIVATING AND RELAXING: Endless entertainment is guaranteed with this magnetic fluid display. Interacting with its unique magnetic properties provides hours of fun and relaxation, making it an engaging addition to any deskSpecification:Item Type: Ferro Fluid Sound VisualizerMaterial: ABS+LiquidPower: 14.8Wh/3.7VNote: Input requires 5V2A plug, other plugs will affect the jumping effect.Package List:1 x Fluid Sound Visualizer1 x Record1 x Stand1 x USB Cable1 x Magnet12 x Marker PenNote:Long term presence of air bubbles in the water from the magnetic fluid is a normal phenomenon.