Ideal Heating Cup Holder - Great for coffee, tea, hot cocoa and all other beverages that need to be heated at home, in the office or during outdoor activities. It can keep a cup of hot drink for you at any time Insulation - Keep your coffee, tea or other hot drinks at 45 degrees, no need to worry about high temperature and high oxidation, safe to use Durable Material - The material is made of steel shell and aluminum plate, which means it has a long service life and anti-fall ability. Safe and efficient. It also has a waterproof surface, so you don't have to worry about the top overflowing Easy to Use - It is suitable for powering any device with 5V USB output, such as computers, desktops, laptops, tablets, mobile power supplies, etc., convenient and fast Easy to Clean - The surface of this USB cup heater is very easy to clean. You just need to wipe the surface with a damp cloth