Keep your drinks fresh with the USB or Battery-Powered Stainless Steel Auto-Stirring Mug Made from top-quality stainless steel to keep your drink warm for up to 4 hours Complete with a fluid motor that will self-stir your drink at the touch of a button Perfect for frothing up your coffee or hot chocolate Can also be used to stir up cold drinks too Easy to clean just by rinsing - do not wash in the dishwasher or submerge in water Available in 4 colouts: white, pink, yellow or black Choose from 2 options: battery-powered or USB powered Battery-powered option requires 2 x AAA batteries (not included) USB powered option includes a cable to keep it topped up from your computer   Buying Options:  14.99 pounds instead of 49.99 pounds for the Battery-Powered option - save 70% 17.99 pounds instead of 59.99 pounds for the USB-Powered option - save 70%