Automatic Mixer: No need for spoons, the mixer will mixing by itself automatically, suitable for both cold and hot drinks, the rotating open/close lid design, leak-proof and convenient, allowing you to take the drink from the kitchen to anywhere. Suitable for: Very suitable for coffee, tea, hot chocolate, milk, protein shakes, lemonade, broth and many other mildly mixed drinks that need to be stirred. Easy to Operate: Just press the "stir" button to start stirring automatically, press the button again to stop stirring. Stainless Steel Material: Stainless steel is not easy to rust, strong and durable, the cup body shell is PS material, heat insulation and anti-scalding, can protect your hands effectively.