Specifications MaterialStainless Steel Food Grade PlasticWeighAbout 400gCapacity450MLSize8 3 6 4 18 9cmBattery2 x AAA battery Not included ColourBlack White Yellow Blue Features 1 This hot stainless plain self stirring mug is specially designed to auto mixing tea coffee etc 2 Just press the button on the handle it will do self mixing immediately 3 No spoon any more quickly stirring cup for both home and office use 4 Super mute motor you don t hear any noise it has already finished its work5 Mute mixing impeller and sealed mug cover no need to worry about liquid splashing 6 Made of stainless steel seal of the lid can keep the temperature of the coffee double insulation not hot7 High quality stainless steel and food grade plastic made safe and long lasting Package includes 1 x CupNote 1 Please allow 1 2cm errors due to manual measurement make sure you do not mind before ordering 2 Due to differences between different monitors the image may not reflect the actual coloration of the item