This self-stirring coffee mug is made of high borosilicate glass and features a maple wood color and clear design. With a 400ml capacity and 2 AAA batteries powering the automatic stirring function, this mug is perfect for enjoying drinks at home, office, gym, or school. Easy to operate and clean, it's a practical and novelty gift for Father's Day, Birthday, Anniversary, Thanksgiving, or Christmas. Features: 1. Auto Stirring Coffee Mug: Just add your favorite coffee, milk, etc. to the cup, press the button, and you can enjoy drinks Whether at home, office, gym, school, etc. 2. Battery Powered: The automatic stirring cup is powered by 2 x AAA battery, there is no need to replace the battery frequently, which is more environmentally friendly, water doesn't seep into the battery area and safer. 3. Easy to Operate: Press the button to start automatic stirring, long lifespan. It is easy to clean it with running water, but do not use the dishwasher or completely soak it for cleaning. 4. Premium Material: The automatic mixing cup is made of high borosilicate glass, sudden cooling and rapid heating are not easy to burst. 5. Novelty Gift: Novel and the practical ideal present for Father's Day, Birthday, Anniversary, Thanksgiving, or Christmas. Specification: Material: High Borosilicate Glass Product Color: Brown Product Size: 145 x 97 x 105mm Product Weight: 270g Capacity: 400ml Power: 1W Battery: 2 x AAA Battery Package Included: 1 x Self Stirring Coffee Mug