Self Stirring Mug- Reusable Auto Mixing Cup with Travel Lid for Protein Mix, Bulletproof Coffee, Chocolate Milk, Hot Cocoa by Chef Buddy, 15 oz CYCLONE ACTION MIXER-The plastic blades of the rotating fan at the bottom of the mug quickly blends beverages in a circular motion. Simply hold down the on/off switch, conveniently located on the handle of the mug, until your drink is mixed! GREAT FOR TRAVEL-The leak resistant snap-seal lid makes it easy to mix in your favorite cream, sugar, or protein powder while on-the-go. In addition, this mug uses common AA batteries for power, so no cords or electric outlets are required! UNIVERSAL DESIGN-The classic colors and design work great for home, at the office, or in the classroom. In addition, this mug is a great gift for busy moms and dads, college students, coffee enthusiasts, or friends and family who are hard workers! MULTIPLE DRINKS-The self-stirring mechanism is durably made to mix fluids for deliciously crafted beverages time and time again. This automatic mixing mug is useful for both hot beverages like coffee or cocoa and cold drinks like chocolate milk! PRODUCT DETAILS-Dimensions- 5.25 X 3.75 X 4.5. Holds up to 15 ounces of liquid. Battery operated- Requires 2 AAA batteries (not included). Color: Stainless Steel and Black. Material: Plastic and Stainless Steel. Hand wash only.