Characterized by a lightweight design, the self stirring cup is easy to carry. And the wide mouth can provide you with easy filling and cleaning. This coffee mug can automatically stir coffee, tea, hot chocolate, milk, and other beverages. And it looks unique for the plane engine shape. It is constructed of stainless steel material. The height of the coffee mug is 17cm, and the width is 8.5cm. It is suitable for trip, home, school, office, etc. Item Name: Coffee Mug Material: Stainless Steel Capacity: 350ml Batteries: 2 x AAA Batteries (Not Included) Features: Automatic Mixing, Wide Mouth, Easy Clean Size Details: 17cm x 8.5cm/6.69" x 3.35" (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 Coffee Mug (Others Not Included)