Water polo floating in the air. vase

I am using a 50ml round bottom flask. The parts other than the flask are made with a 3D printer. After molding, we polish. 4th photo: How to remove 5th photo: Size comparison (AA batteries not included) 6th photo: set contents ■ There is no plant. ■ It is one set price. ■ Be careful in case of a fall. Do not place anything important around the installation. ■ Be careful when installing in direct sunlight to prevent convergence fire. ■ We polish after molding. 《There is some polishing unevenness. 》 ■ The flask has a manufacturer's logo and printing such as capacity. ■ The flask manufacturer may change. As a result, the printed characters may differ from the photos. ■ As a guide, use water up to the top of the sphere and 2-3 plants. ■ Specifications are subject to change without notice.