Magnetic fluid, also known as ferrofluids, is composed of magnetic solid particles with a diameter of nanometers (below 10 nanometers) and has the fluidity of liquids and the magnetic properties of solid magnetic materials. This magnetic fluid was developed by to control fuel in ships under zero . Commonly used in aerospace, precision instruments, chemical industry, electronics, and other fields. BT 5.0 transmission: The BT function can transmit signals quickly, with stable connection, high bit rate, and low power consumption. There is no need to worry about using the system version of the device, as long as it has the Bluetooth-compatible function, it is compatible. Immersive surround sound: 3D stereo music, shocking, low distortion, round, warm, natural and balanced, bringing a feast to the ears. Music visualization: magnetic fluid keeps rhythm under the warm white light. According to the music of different rhythms played by the user, the magnetic fluid will show different speed and shape changes, giving people visual enjoyment. Practical design: There are three touch switches on the back of the speaker, which are the power switch, the light switch and the magnetic fluid jump switch, which are sensitive to operation; the Type-C interface is connected to the power supply, and the appearance is very artistic. Product Name: Floater Magnetic Fluid Box Lighting type: LED single lamp bead Magnetic fluid capacity: 4ml Background lighting: cold Rated power: 10W Power transmission: 12V2A Horn power: 4 10w Blue Version: Blue 5.0 Caution: Do not place the overheated ground. Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage: AC100-240V Colour:A: White Material:ABS+metal Package Contents: 1 x Host 1 x 1 x Adapter 1 x Engliah Instruction manual 1 x Magnet 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.