Description: This coffee mug is equipped with automatic stirring function, which is more convenient and practical for you to use. With heat-resistant and BPA free features, this milk mixing cup is safe for you to use in daily life. Made with plastic and stainless steel material, this coffee mug is solid and durable. The length of this product is 11.5cm and width is 8cm. It is suitable for you to use at home, dorm, office and so on. Item Name: Stirring Coffee Mug Material: Plastic,Stainless Steel Features: Multi-function, Easy to Clean, Automatic Capacity: 400ml Battery: 2 x AAA Battery (Not Included) Size Details: Size: 11.5cm x 8cm/4.53" x 3.15" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Stirring Coffee Mug (Others Not Included)