Description:Voltage :220~240V/110~120V Frequency: 50 Hz／ 60 Hz Power: 100/200/300W Completely and accurately into the water to maintain the set temperature. Temperature display beautiful clear, the temperature constant. Quartz crystal glass used and the high efficiency of the strengthening of ceramics, with explosion-proof functions and faster heat transfer characteristics, to ensure its long-term use, The heater also has strong support hook and parking suction head and make its work more secure.