Description This item is a portable and practical round-shaped quartz hour meter, specially designed for standard industrial timing and providing data for maintenance duration reference on precision equipment. It is widely used for tracking operating time on machinery such as engineering vehicles, various types of equipment, and other devices requiring hour recording. Features - Color: Black - Material: Durable plastic and metal - Round shape with 6-digit display quartz hour meter - Compact size, operates within a wide voltage range - Fits a 2-inch round hole - Waterproof design with stable performance, ideal for monitoring usage time on machinery including engineering vehicles and other equipment Specifications - Accuracy: ±0.01 - Voltage: AC/DC 10V–80V - Power Consumption: 0.3W - Working Temperature: -10°C to +50°C - Time Range: 0.1 to 99999.9 hours Packing List 1 x 10V–80V DC/AC 2-Inch Round Gauge Hour Meter for Marine Boat Engine (Black)