1. [Design Inspiration] Magnetic fluid is known as the prototype material of the Marvel movie Venom. The purpose of the design is to allow the magnetic fluid in the glass bottle to rise with the sound rhythm and music of the outside world, thereby visualizing the sound/music. 2. [Product Material] Round metal shell, high-definition borosilicate glass, nano iron powder, pure water, environmentally friendly and non-toxic. Built-in MIC, white LED backlight, can be used without connecting any lines, built-in battery, fully charged can be used for 6-8 hours. It is a reliable source of entertainment and party relaxation. 3. [Use Scenario] It can be used as a music partner/sound partner of HI-FI speakers, creative desktop ornaments, home decoration, stress-relieving toys, relieve tension, and can also be placed on the surface of the piano as a piano metronome. 4. [Working Principle] The magnetic fluid speaker can accurately capture the frequency of external sound vibrations and convert them into the beautiful dance of magnetic fluid. This magnetic fluid speaker is designed to provide an instant and visually stunning response to your listening environment.