Features: 1[Useful]The automatic mixing cup uses fluid self-stirring technology to stir the liquid in the cup. 2[With Lid]With a sealed mug cover no need to worry about liquid splashing. 3[Not Off-center]The self-stirring mug with the fixed rotor not the off-center fixed rotor not off-center. Specification: Description:The 400ml coffee mixing cup is made of stainless steel and plastic for a long time of use. When adding boiling water or rotating the rotor will not deviate from the center which can avoid the risk of accidental eating.Features:[Useful]The automatic mixing cup uses fluid self-stirring technology to stir the liquid in the cup.[With Lid]With a sealed mug cover no need to worry about liquid splashing.[Not Off-center]The self-stirring mug with the fixed rotor not the off-center fixed rotor not off-center.[Easy to Use]Just press the switch to quickly cool down and shake the drink.[Widely Applicable]It can shake and cool coffee milk juice medicine protein powder etc. Suitable for men women the elderly children and students.Specifications:Color: White; Red; Green; Pink; Blue; Black (Optional)Material: Stainless SteelCapacity: 400mLBattery: 2*AAA battery(Not Included)Occasion: Home Office Outdoor etcPackage Size: 13*10.5*8.8cm / 5.11*4.13*3.46inchPackage Weight: 350g / 0.77lbPackage List:1 * Self Stirring Mug Package List: 1 * Self Stirring Mug