Wireless Connectivity: Enjoy seamless music playback without the hassle of wires. Rechargeable Design: Equipped with a long-lasting battery for extended playtime. Magnetic Pickup Technology: Enhances the visual effect of the ferrofluid dancing to the rhythm of your music. User-Friendly: Simple controls and easy setup make it accessible to everyone. Perfect for parties, personal enjoyment, or as a unique gift, our sound visualizer turns every music session into a spectacular show. Experience the magic of music with our Ferrofluid Sound Visualizer! This innovative speaker is not just a device but a mesmerizing visual experience. Colour:Black/White Material:plastic<br><br>Package Contents: 1 * Ferrofluid Sound Visualizer 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.