J-DEAL Portable Mixing Bottle Dairy Milk Coffee Tea Beverage Drink Mixing Cup - self Stirring, Electric Auto Stir Stainless Steel Automatic Self Mixing Glass Tornado Portable Mixer Perfect for working/traveling-restaurant, bar, KTV, hotel and home whenever you want a cocktail or morning coffee. Self-Stirring Button - technology that stirs your cocktail, coffee and anything added Multiple purposes, can be used for coffee, bartender, Fruit juice, hot chocolate and soups, etc Powered by 2*AAA, leak-proof, Easy to dump and clean Material: Food grade transparent plastic (without BPA)