The device is gray caught, the region does not catch the ru. So, only for domestic use in China. In general, this is not a minus of the device, but a question for sellers. Pros below: Quiet. The backlight turns off. Washing is VERY easy / simple / convenient. Two operating modes: constant and 10/10 minutes - flowing / standing in the tank. Different cons: There is no adapter for a socket with a Chinese plug. Specifically, this purchased model is connected only to the Chinese region in Mi Home for control from the phone. It is very inconvenient, because other equipment still catches the ru region.