Hour Meter, Display Type Electromechanical, Time Range 0 to 99999.9, Bezel Face Size 2.93 in dia, Bezel Face Shape Round, Bezel Face Type Flush Mount, Elapsed Time To 99,999.9, Operating Voltage 115V AC, Hz 60 Hz, Number of Digits 6, Display Units Hours/Tenths, Bezel To Back Length 1.6 in, Depth 1.35 in, Length 0.4 in, Width 2.93 in, Ambient Temp. Range -22 Degrees to 158 Degrees F, Material of Construction Black Polymer, Input Type Electrical, Reset Type Non Resettable, Mounting Method 3-Screw