Unique Design Powered by USB 5V, built-in MCH ceramic heating element at the mug bottom, heating speed is faster, won't burn your hands, when the mug is placed on the power base, the heating and heat preservation function is automatically activated, keep your drink perfectly hot about 55 /131 (with Lid). Best Materials The mug made of high quality food grade 18/8 stainless steel, sleek and rugged, Scratch resistant, easy to clean, mug lid with food-grade silicone sealing ring, maximum leakage and dustproof, you can put a straw or open to drink directly. More Fashionable Innovative light effects design, 7 colors LED indicator automatic gradual changing, give you a perfect sense of vision, this mug s LED indicator tells you when your water is ready, warmer coffee easy even if you re in a dark night. Non slip silicone pad to make sure the mug warmer stable on desk, more considerate use. You Will Get The package includes 1x Heated Mug, 1x Cup Lid, 1x Power Base, 1x USB Cable, 1x User Manual. Perfect gift for coffee lovers, say goodbye to boring old-fashioned coffee mug warmer.