Feature: 1. COMPREHENSIVE 3 in 1 MEASUREMENT: 85mm gauge incorporates a tachometer, fuel level gauge, and voltmeter, delivering precise readings, giving you convenient use. 2. STRONG COMPATIBILITY: Designed for a wide range of vehicles, suitable for cars, boats, trucks, motorcycles, and off road vehicles, ensuring adaptability for your needs. 3. ACCURATE READINGS: Experience reliability with our speedometer as it delivers precise readings for crucial parameters, allowing you to observe your vehicle's performance. 4. ENDURING MATERIAL: Made of high grade metal material, sturdy and rugged, long lasting and an excellent helper for indicating parameters, not easy to crack and damage. 5. PROFESSIONAL UPGRADE: Install on any 4, 6, 8, 10, or 12 cylinder gasoline powered 12V engines, allowing you to effortlessly upgrade your model and ensure dependable use. Specification: Item Type: 3 in 1 Speedometer Voltage: DC 9-32V Speedometer: 3000rpm Voltage Gauge: 8-16V Fuel Level Gauge: E-1/4-1/2-3/4-F 7 Colors Backlight: Backlight Order: Red (default), Green, Blue, White, Yellow, Cyan, Purple, Auto Auto: Switches every minute in the above order Fitment: Suitable for Truck, Tractor, Trailer, Car, RV, Boat. Package List: 1 x Speedometer 1 x User Manual