Dry boil protection automatically shuts down The cordless glass electric kettle provides thermal shock protection through intimate details such as automatic shut-off safety features. The 360-degree rotating base allows you to take out the illuminated cordless kettle for easy dumping and then replace it at any angle. Easy to clean-use white vinegar, baking soda, cleaning bottle brush and microfiber cloth to clean your kettle and keep it brand new. Heating time: 4 transactions Bivalent voltage design, optional 110V120V or 220V240V(Spin Button), universal voltage for different countries. Button for gap cover on the handle, do not scald hand.