Features: 1[Useful]The automatic mixing cup uses magnetic force and 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 380ml coffee mixing cup is made of stainless steel & ABS plastic and the bottom silicone is stable and non-slip to 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 magnetic force and 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 students.Specifications:Color: White; Coffee (Optional)Material: Stainless Steel ABSCapacity: 380mLBattery: 2*AA Batteries(Not Included)Occasion: Home Office Outdoor etcPackage Size: 15*12.5*11.5cm / 5.9*4.92*4.52inchPackage Weight: 350g / 0.77lbPackage List:1 * Self Stirring Mug1 * User Guide Package List: 1 * Self Stirring Mug1 * User Guide