Coffee, tea, or any hot beverages are best enjoyed at your own leisure. The ionMug & Charging Coaster in black helps you do that by keeping your drinks at the perfect temperature all day from its charging coaster. Once charged, the mug is designed to hold its temperature for up to 3 hours, so no more racing against the heat of your drink and no more turning to the microwave for reheating. It's the perfect size too at 3.5" x 5", and weighing only 1 lb. With multiple temperatures, an auto shut-off feature, a spill-proof warming lid, and more-the ion Mug is your go-to cup for any hot beverage! -Drink at your own pace: Features a built-in rechargeable battery that can keep your beverage perfectly hot for up to 3 hours, or leave it on the included charging coaster instead to keep it hot all day. -Wash away: Made with 304 stainless steel and ABS material, the ion Mug can easily be cleaned under running water. -No worries: The 12oz. ion Mug will turn off automatically after 3 hours, or if no liquid is detected in the mug. -The anti-spill lid helps keep your hot beverage in your cup and not on your lap. -The right temperature: Choose from 3 adjustable temperature levels: 135° F, 140° F, or 145° F. The LED temperature indicator clearly shows your desired temperature level, as well as when the heating process is complete. -Dims - 3.5" x 3.5" x 5", 1 lb