Tiger PVW-B30U Stainless Steel Vacuum Electric Water Dispenser 3-Liter br Click below to buy on Amazon: br 2 way styles for dispenser Electric and air pump without using electricity br Choices of Energy saving modes VE mode Energy Saving Mode br VE Mode is when the water boils heater shuts off automatically and uses Stainless Steel Vacuum Insulation to keep warm br Energy Saving Mode applies after 2 houes not in use It reduces approximately 9F from regualr setting temperature br Auto lock system after dispensing for safety