Features:SYS-1D type quartz electronic completely sealed timer, power on, power off stop, stop when no position, accumulative timing.This product has the advantages of novel structure, dexterity, high accuracy.Widely used, stable and reliable performance, long service life, convenient to use.Applicable to standard industrial timing, widely used in construction machinery, engineering vehicles, agricultural machinery, generators, air compressors, pumps, traffic, cranes, various types of vehicles and other cumulative actual working time charges.Can track and monitor accurate instruments and equipment to provide scientific basis for the assessment of maintenance cycle.Specification:Model: SYS-1D-RTiming range: 99999.9(hours)Timing accuracy: 0.01Reset device: with reset device (small white button at the back end)Power: 0.3 WTemperature: - 10 -- 75Relative humidity: fully sealedSeismic amplitude: 10-70HZ 1-8g (heavy strength)Opening size: 38 x 28mmBattery: 620mAh CR2450 button battery(Built-in)Package List:1 x Electronic Counter(Built-in battery).