Hour Meter, Display Type Electromechanical, Time Range 0 to 99999.9, Bezel Face Size 1.60 in x 1.10 in, Bezel Face Shape Rectangular, Bezel Face Type Flush Mount, Elapsed Time To 99,999.9, Operating Voltage 120 to 240V AC, Hz 50/60 Hz, Number of Digits 6, Display Units Hours/Tenths, Bezel To Back Length 2.15 in, Ambient Temp. Range -40 Degrees to 185 Degrees F, Material of Construction Black Polymer, Reset Type Non Resettable, Temp. Range -40 Degrees to 185 Degrees F