This Corning PC-400D hot plate has a 5 x 7 inch (12.7cm x 17.8cm) Pyroceram® top and a digital temperature display. It is designed to operate on 100V/60Hz with a standard US three-prong plug for use in Japan and other areas with similar electrical requirements. Microprocessor maintains consistent and repeatable temperature settings from 5°C (if ambient temperature is 0°C or lower) up to 550°C. Digital LED temperature display is adjustable in 5°C increments and blinks until set temperature is reached. Optional external temperature controller truly controls temperature inside the vessel and eliminates the need to closely monitor liquid temperature. A bright LED hot top icon lights up when top plate is over 60°C, even when heat control is turned off. Separate temperature sensor provides power cutoff if unit overheats. Two piece casting design deflects spills away from electronics and includes a built in mount for an optional 18 inch (45.7cm) support rod. UL and CUL approved. Two year warranty. This is the suggested replacement for Corning® Item Number 6797-400. Number of Stirring Positions: 1. Top Size: 4.25 x 7.75 x 28 Inches (10.8 x 19.7 x 28cm). Top Material: Pyroceram® Glass-Ceramic. Temperature Range: 5°C to 550°C (41°F to 1022°F). Power: 100V, 60Hz. Amperage: 5.5. Watts: 548. Dimensions (L x W x H): 4.25 x 7.75 x 28 Inches . Weight: 2.7kg. Corning® #: 6797-400D.