Allytech Portable Battery Powered Electric Self Stirring Mug Skinny Moo Mixer Chocolate Milk Coffe Cup This personal mixer system by Allytech is 100% PORTABLE, which allows you to mix up proteins and shakes while on the go. The self-stirring mug is the ultimate lazy man's mug Includes spill resistant lid and cool, cow styling Tested for safety and durability,it's easy to wash. Powered by: 2 x AAA batteries (Not include)