Come and see our amazing products. This mug is made of food grade ABS plastic materials and premium-quality stainless steel inside assures years of leak free and safe stirring.Stainless steel cup keep warm about 2 hours.Designed to work great when you're on-the-go.Solid lid reduces any spill even while stir function is on.Ideal for coffee, tea, hot chocolate, milk, protein shakes, lemonade, bouillon and many other light mix drinks.The magnetic stirrer at the bottom of the cup can be quickly removed and placed back for easy cleaning, but do not use a dishwasher or clean by full soaking.Simply connect the mug to any USB port with the included USB cable, no batteries required, save you money, clean and convenient, It can be quickly fully charged in 1.5 hours, very safe and eco-friendly, easy to use. Pls confirm further with us if any query about packing info, inventory status and time schedule.