Features: - Made of food-grade material, safe and healthy, and the inner liner is closed design and the water will not leak. - Automatic stirring function, press the switch and later you can get a full mix of warm coffee. - Perfect for use in your home or office, and keep your coffee, tea, or other beverage warm. - Lightweight and portable, you can carry it anywhere you want to go. Specification: - Type: Stirring Coffee Cup - Material: Stainless Steel? ABS - Applications: Home Kitchen Office Outdoor - Size: app.9x9x13.5cm - Capacity?380ml - Power by? 2 x AAA batteries(Not Included).