Description: 【Music Rhythm Lamp】: This Dancing Ferrofluid Music Rhythm Lamp is both a scientific decorative lamp and an lighting decoration. If the music is loud, the color of the lamp changes and the ferrofluid dances to the rhythm of the music. 【Audio Visual Experience】: What this Fluid Speaker does is respond song audio or volume by driving ferromagnetic fluid, allowing it to selectively respond to high or low sounds. 【Interior Decoration Light】: Just plug in and turn on the switch, easy to use. 【premium】: Ferrofluid Speaker is made of premium pp material, which can be used repeatedly and has a long service life. 【Holiday Gift】: The Ferrofluid Visualizer Lamp is premium for Christmas, Halloween or other holiday enthusiasts who science or home decoration, adding a sense of technology and color to their lives. Specification: This product does not contain batteries Size Chart: 11.5cmx11.5cmx7.6cm/4.53inchx4.53inchx2.99inch Package Includes: 1 Dancing Ferrofluid Music Rhythm Lamp Note: Please allow slightly errors 1-2cm differences due to manual measurement. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin