Space Heater Indoor Portable Office Heater Adjustable Thermostat 1500WFast & Efficient Heating: Electric heaters use ceramic heating elements to swiftly heat up to 70F and have rated power of up to 1500 watts for instant warmth. There are two heating modes to choose from: high (1500W) and low (900W). Several safety features: Built in overheating and tip over protection sensors, as well as a V 0 flame retardant material rating, a 12 hour timer, and a 24 hour auto off function, all contribute to a safer personal heater