Super9 Norpro 559 Instant Electric Immersion Heater 300 Watts for Water Coffee Tea (2-PACK) Home Single Small Electric Immersable Heaters With Thermostat Mini For Hot Pool Tub Tank Bucket Boiling 2-Pack UNIVERSAL, DUAL World-Wide Use Portable For Hot Beverages For Heating-Up Water, Making Coffee, Tea, Soup, Cocoa Great ForHotels, RV'S, Campers, Trucks, Cars, Office, Home, Boats, Busesore Universal Auto Voltage World-Wide Use 110/220 Volt Portable Water Coffee Immersion Beverage Heater Heating up water to the right temperature or boil egg, potato, etc.