Long-lasting warmth: Thermostatic coasters keep you warm for longer.2-level temperature adjustment, choose the drinking temperature that suits you. Rich functions: coasters focus on heating and maintain a constant temperature. The sensor switch is easy to operate. The tempered panel is waterproof and easy to clean. Timer Button: Totally adjustable from 1 to 9 hours, so you can set the time however you want to maintain a constant temperature. Level Buttons: There are first and second levels. The first level is high temperature and the second level is low temperature. Automatic Recognition: The coaster can automatically recognize the heating of the liquid in the cup. The coaster will automatically close after 5 minutes of emptying. Beautiful: The coffee cup heating coaster is thin and beautiful. This is the perfect gift for colleagues, family, parents and friends. Take care of your family Name: Electric roller coaster Power supply mode: plug and play (including power cord) Display: yes Timer function: yes (1 to 9 hours) Anti-slip feet: yes Voltage: 110V Power: 18W Uses: hot milk, coffee, beverages, tea, water, etc. ]Material: aluminum alloy + tempered glass Package Contents: 1 coaster