/50-60hz. 4:)triple protective device to avoid dry-out boiling. 5:)double layer edible plastic cover is using to avoid scald to use, which is also better for keeping warm of water inside; 6:)fixable water plate is added to avoid water spattering, which is easy to install/uninstall. 7:)complete flat water gauge, which is a better design to avoid any damage during shipping or in use. 8:)there is big advantage in quality, price and production quantity because of own-designed hardware and plastic mold, as well as good production line control in molding, punching, shaping and even assembling. 9:)ccc national quality safety certificate is acquired. Weight:4.06kg.Packing size:320*320*565mm