Specification: Cupmaterial: stainless steel + ABS Capacity: 400ml Color: Yellow, Black, White. Size: 8.8* 10.5 * 13cm Battery:Two AAA Batteries(not included) Features: 1. Built-in powerful small motor, strong and even stirring. 2. Shaftless liner, double-layer process, no hole liner and no leakage. 3. The operation is simple and can be run with one key. 4.Cup that can magnetize water. science knowledge: When water flows under a specific magnetic field, water generates electromagnetic induction, which changes the physical and chemical properties of water. Some water molecules become smaller single molecules, which have dissolving power and permeability, helping the dissolve and discharge harmful substances.