Description: The 380ml coffee mixing cup is made of 304 stainless steel, PP & 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, and students. Specifications: Color: White; Black; Pink; Coffee (Optional) Material: 304 Stainless Steel, ABS, PP Capacity: 380mL Voltage: 5V/1A Battery: 1*3.7V 400mAh Working time: Can be used about 90 times after a full charge Occasion: Home, Office, Outdoor, etc Item Size: 14*9*13.7cm / 5.51*3.54*5.39inch Package Size: 12.5*11.5*15cm / 4.92*4.52*5.9inch Package Weight: 365g / 0.8lb Package List: 1 * Self-Stirring Mug 1 * Stirring Magnet 1 * Magnetic Charging Cable 1 * User Guide Note: Attention: No power can be turned on, the red light will be displayed when charging, and the blue light will be displayed when fully charged. It takes about 1 hour to charge a single charge. The data is for reference only, please refer to the actual usage.