This electric mug warmer offers a convenient solution for keeping your coffee, tea, milk, or other hot beverages at your preferred drinking temperature throughout the day. Featuring three adjustable heat settings of 113°F, 131°F, and 149°F, the warmer uses a simple touch button control with an intelligent temperature display for easy operation. The 3.1-inch heating plate accommodates most standard cups including glass, ceramic, and stainless steel, with best results achieved using thin-walled cups with flat bottoms. Powered by USB with a 15-watt heating element, this desk accessory is ideal for office or home use. The built-in 8-hour auto shut-off function provides peace of mind by preventing safety hazards if you forget to turn it off. The compact design fits easily on any desk or workspace without taking up much room. This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. The mug warmer is constructed from ABS plastic and stainless steel materials. Do not touch the heating plate during operation as it becomes hot.