USB rechargeable automatic stirring magnetic cup, intelligent coffee milk mixing cup stirrer 1.Unique small magnet design. A built-in magnetic device at the bottom of the cup to drive the magnetic bar, which can heat and stir the cup at high speed. A premium fluid motor works quickly at the push of a button. 2.Simply use the included USB cable to connect the mug to any USB port, no batteries required, save money, clean and convenient, fully charged within 2 hours, very safe and environmentally friendly, easy to use. 3.This cup is made of food grade ABS plastic material with high quality stainless steel interior to ensure years of leak free and safe stirring. Safe to drink. 4.Perfect gift for family, friends and colleagues who love coffee, hot chocolate, protein powder or other drinks that need to be stirred. Perfect gift for family morning coffee, office, travelling, Father's Day, Mother's Day, Christmas and more. Size: 6.4*8.5*13.5CM Capacity: 400ML Material: Stainless Steel Includes: Mixing cup*1