Self Stirring Magic Mug Transparent Acrylic Coffee Mixing Cup Automatically It can also froth and foam milk Very easy to use one button operation Requires 2 x AA batteries (not included) . Need to remove the lock on battery . The lid is required to prevent spillages Not dishwasher safe Dimensions: 13 x 9.5cm (HW) Capacity:250ml Hasty humans and spoon-less households create concoctions without manual maneuverings as fingers push buttons to launch self-stirring sequences within mugs. While base blades swiftly spin to blend mixtures forming whirlpool waves, snap-lock lids lock in place to prevent leaks and cold air invasions. Stainless steel mugs travel through parallel universes and show up on doorsteps free of cost as curious children and beverage brewers watch automated stirring in awe. Package Contents 1 x Self Stirring Mug Coffee cup