Feature:This energy-efficient heater is three-dimensional surround, Ideal for quickly heating up small areas both around the home or in the office. Suitable for under-desk heating to warm your feet and knee.Equipped with a safety thermal cut-off device, automatic shut-off when: 1. overheats 2. tip over or dumping 3. continuous heating for 3 hours.Constant temperature heater, 3 levels of temperature adjustableThe heater also benefits from low wattage with rapid heat up for extremely economical use.Silent Operation, no noise. No worry about it will disturb your sleep and rest.Easy to use simply plug in and press the button.Switch:1.Long press switch for 2 seconds to turn on or off.2. Tap to set the timing, from 1-12 hours.3. Temperature control: 0-4040-5050-6060-700-104104-122122-140140-158Tip: After 3 hours, the heater will auto-off by default.Specification:Temperature: 0~700-158Product Size: 108*53cm(42.52*20.87in)Voltage: 220V/110V (If the voltage in your country is 110V, we will send you a suitable transformer, so dont worry about voltage mismatch)Packing List:2021 Latest upgrade Office Foot Warmer*1