... clean. 2.Good quality, reasonable price. 3.Wide range, two knob stylish design. Ceramic Cooker:1. Voltage: 220-240V/50-60Hz ... Zone: 230mm. Max temp of surface: 570 centigrade.4. Two Knob Control, Machinary sensor, one timer function and one power control ... .7. Never select the pan: utensils of iron, aluminium, copper, pottery, marmite, and the heat-resisting, glass pot are applicable.8 ...