Our electric self-stirring coffee mug comes with strong-absorption magnetic stir rotor,providing 60 seconds of even stirring for both cold and hot beverages without sedimentation or separation of ingredients. 3 Heat settings can keep hot drinks at your desired temperature and optimal flavor. Made from food-grade stainless steel, it is rustproof, high-temperature resistant, free from toxic substances, definitely safe for stirring both hot and cold drinks, like tea, coffee, honey, medicine, oatmeal and more.