Hour Meter Display Type Electromechanical Time Range 0 to 99999.9 Bezel Face Size 1.89 in x 1.89 in Bezel Face Shape Square Bezel Face Type Flush Mount Elapsed Time To 9 999.9 Operating Voltage 10 to 80V DC Hz - Number of Digits 6 Display Units Hours/Tenths Bezel To Back Length 2.33 in Depth 1.75 in Length 1.89 in Width 1.89 in Ambient Temp Range -40 Degrees to 185 Degrees F Material of Construction Black Polymer Input Type - Reset Type Non Resettable