If, like me, you have a partner who drinks more coffee than a fish does water then this may be the mug for you especially if they can't be bothered to stir it if you haven't done that for them i always get the complaint that the brew i make is never stirred enough and this mug seems to be the perfect solution! If i've not stirred it enough, then i'll let someone else do the work! This lazy man self stirring mug has a built in, battery powered mini stirrer on the inside of the vessel, so, at the push of a button, all of the effort of stirring your cuppa is taken out of your, erm, hands... A push button sits on the handle, so, with cuppa in hand, you can stir your drink by pressing down with your thumb in short, it's the perfect solution for the man who wants a cuppa but can't be bothered to stir great for reducing complaints about the cuppa not being stirred enough, it's also handy for drinks like hot chocolate where particles start to settle over time, and keeping the mixture stored adds to the experience requires 2x aaa batteries not supplied and is also hand wash only not suitable for use in a microwave measures about 11 cm in height and 8 cm in diameter and holds around 8 fl oz.