... hour conversion 4. temperature display 5. cell battery inside led clockSelf developed LED electronic products:LED ... : di di di di4. Power Supply: DC 6V/500MA power supply, external power, built-in button ... it is afternoon.5, built-in CR2032 button battery (under normal circumstances, it can work 4 ... remember removing the insulation film in the cell battery box. • Avoid close to the high temperature, fire ...