Features:High-quality material: Made of high-quality borosilicate glass material, cold and heat resistant, not easy to break, can be used for a long time, durable.EASY TO PORT: With this self-stirrer coffee mug, you can perfectly mix drinks in seconds. Just push a button, no spoons or whisks required.Stirring with Easily: This mug creates a powerful twisting when you press the button. It easily stirs thick, grainy liquids for quick and thorough drink mixing. More efficient and effective than traditional methods.COMFORTABLE HANDLE: Ergonomic wooden handle design, easy to hold and easy to carry.Great Gift: This self-stirring coffee mug is a great gift for relatives, friends, colleagues on Christmas, Halloween, Thanksgiving, Birthday and other festivals.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementMaterial: high borosilicate glassProduct size: 14*10.5cmCapacity: 400MLPower supply: AAA battery (Not include battery)