Automatic Mixing coffee Tea cup Lazy Self stirring mug button Pressing Features: The self-stirring mug is the ultimate lazy man's mug. It's great for tea, coffee, hot chocolate, protein drinks and soups. Simply press the "stir"button and have the hard work done for you! Perfect for the lazy tea or coffee lover. Wonderful gift for your friends. Specifications: Material Stainless Steel Size:Approx.11.5 x 8.8cm(Height x Diameter) Color:Black Battery requires:2 x AAA Batteries(Not included) Package Included: 1 x Self stirring mug(Batteries Not included) Notes: 1. Due to differences among different monitors, the pictures may not reflect the actual color of the item. However, we guarantee that the style is the same as shown in the pictures. 2. Due to different measure skills , there may be 1-3mm tolerance. Thank you for your understanding.