Searon 12V 24V 36V 48V Small Digital Hour Meter for Marine Boat Engine Digital Hour Meter for Boats Automobiles Motorcycles ATV Lawn Tractors Generators Voltage Supply: 4.5 -60 Volts both AC and DC power Hours Display Reading: 99,999.9 with running indicator and Automatically recycle to zero Memory capacity: CMOS EEPROM with over 25 years service lifetime Complete Waterproof and 2 Years Warranty