The automatic mixing cup uses magnetic force and fluid self-stirring technology to stir the liquid in the cup. No need for a spoon, just add your favorite Powders (Bulletproof coffee, butter, coconut oil, heavy cream,etc) to the cup, press the button,and you can enjoy drinks Whether at home, Office, gym, school, etc. The automatic stirring coffee cup is made of food-grade ABS and 304 stainless steel. 9CM wide mouth, it is easy to clean. The double-layer design of the cup body will not burn your hands when the boiling water is poured into the cup. Bottom non-slip design. Upgrade the USB charging, charging for 3 hours to use 7000 rpm/minute, strong power, quickly stir water and powder to make the mixture taste smoother. Stainless Steel Cup Keep Warm about 3 hours.