1、VERSATILE 3 IN 1 GAUGE: This tachometer measures up to 7000 RPM, along with fuel levels (240-33 ohms, 0-90 ohms, 0-190 ohms, 10-180 ohms adjustable) and voltage (8-16V), providing accurate readings for essential vehicle parameters in one compact gauge. 2、7 COLOR BACKLIGHT: Featuring a dynamic backlight that cycles through red (default), green, blue, white, yellow, cyan, and purple automatically every minute, this gauge enhances visibility and adds a stylish touch to your vehicle's dashboard. 3、EASY INSTALLATION: The gauge installs easily on any 4, 6, 8, 10, or 12 cylinder gas powered engine designed for 12V vehicles, providing convenience for both professionals and enthusiasts when upgrading their vehicle instrumentation. 4、ROBUST MATERIAL: Made from quality metal, this speedometer gauge is designed to withstand harsh conditions, ensuring long lasting performance and reliability as a helpful tool for monitoring important engine metrics. 5、APPLICATIONS: This boat RPM gauge is suitable for all types of vehicles, including cars, marine vessels, boats, trucks, motorcycles, and off road vehicles, making it a versatile addition to any motorized setup. Item Type: 3 in 1 Speedometer Voltage Fuel Level Gauge Material: Metal Voltage: Direct current 9-32V Speedometer: 7000rpm Voltage Gauge: 8-16V Fuel Level Gauge: E-1/4-1/2-3/4-F Seven Color Backlight: Backlight Sequence: Red (default), Green, Blue, White, Yellow, Cyan, Purple, Auto Auto: Switches every minute, cycling through the above sequence Fitment: Replacement for Truck, Tractor, Pickup, Car, RV, Boat 1 x Tachometer 1 x User Manual