Feature: 1. Tachometer with Hour Meter: The 85mm tachometer uses a stepper motor to drive the pointer, which accurately displays the engine speed 0‑3000RPM and the accumulated hours 0.0‑99999.9H. 2. Waterproof: Made of stainless steel cover ring and curved glass cover, with anti fog, waterproof and dustproof functions, which is very suitable for harsh sea environment. 3. High Accuracy: With a red backlight for night viewing. The pointer display has the characteristics of high indication accuracy, strong universality, reliability, stability and ease of use. 4. Energy Saving: Ultra wide working voltage design, working power 9‑32V, low power consumption, long service life, high precision, short starting time. 5. Wide Application: Tachometer gauge can also be used for a long time in acid, alkali and humid environments, and can be used in RV vehicles, yachts, fishing boats, ships, auto modification and other fields. Specification: Item Type: Tachometer Material: Stainless steel ring, anti fog glass, PC Color: Black panel silver cover Display Range: 0-3000RPM Accumulated Hours: 0.0-99999.9H Backlight Color: Red Working Voltage: DC 9-32V Installation Size: Approx. 85mm/3.35inFunction: Display speed and cumulative speed Application: RV, yacht, fishing boat, ship, automobile modification and other fields. Package List: 1 x Tachometer1 x Manual