Does Mi Smart Space Heater use a lot of power?

Problem Explanation
Mi Smart Space Heater is equipped with an intelligent temperature control system. The ambient temperature is lower than the preset temperature, automatically heating continuously;When the ambient temperature reaches the preset temperature, it will automatically operate at low power and keep constant temperature.At the same time, the temperature is comfortable, compared with no temperature control of non-thermostatic electric heaters, it will save more energy.Maintain a constant temperature, at this point electric heaters are more energy - saving.Under constant temperature, the power consumption of Mi Smart Space Heater in one hour is about 1 degree (actual data will vary slightly due to different test environments).
Note:
The gear of Mi Smart Space Heater is divided by temperature, not by 1500W, 1100W, 700W, 400W and so on.