chinatera Desktop USB Electric Heat Insulation Plate Coffee Warmer (Black) Portable: Pocket size, easy to tote and take anywhere. High quality: Adopt stainless steel materials in the heating place, quick heating, easy to wipes clean. Easy to use: With On/Off switch controls warmer; blue LED indicates when warmer is on, the plate get hot in 10 seconds Convenient: Power supply by USB plug or adapter, with 1m USB cable enough for almost anywhere use. Widely used: Use for coffee, tea, hot cocoa & any other beverage need to heat in household, office or outdoor activities.