Feature: 1. Mechanical Hour Meter: Wide application in engineering machinery, agricultural machinery, generators, air compressors, water pumps, cranes, various types of vehicles, etc. Let you easily track total working time with high accuracy. 2. Efficient Time Tracking: Operating voltage DC10‑80V, internal mechanical gear mechanism for real time track of total working time ranging from 0 to 99999.9H with an accuracy of 0.01H. Irreversible and accurate recording. 3. Data Storage: Automatically retains original data when the device stops working. Next timing period will start from accumulated value. Ensures seamless data continuity and convenience. 4. Durable Timer: Sealed design with wide temperature range ‑10℃ to 50℃. Effective anti vibration performance ranging from 10 70HZ1 8g. Reliable and durable for long term use in various applications. 5. Hour Meter for Time Tracking: Hour gauge features compact yet powerful design with power consumption of 0.3W. Perfectly suitable for accurate time measurement in industrial settings. Specification: Item Type: Hour Meter Material: Quartz, ABS Timing Range: 0 to 99999.9 (hours) Timing Accuracy: ±0.01 Reset Device: No reset Voltage: DC10-80V Power: 0.3W Operating Temperature: -10℃ to 50℃ Relative Humidity: Fully sealed Seismic Amplitude: 10 70HZ1 8g (Gravity) . Package List: 1 x Hour Meter