1Use a stepper motor to drive the pointer, it can display the engine speed accurately. 2Clear and bright LED display with 7 colors, white, red, green, blue, yellow, cyan, purple. 3Simple and convenient for installation, easy to use and operate. 4Made of high quality ABS shell and aluminum material, anti-corrosion and high strength for maximum durability. 5High level of accuracy and sensitivity, enhance safety of your vehicle.Condition: 100% Brand New Item Type: Tachometer Material: ABS + Aluminum Applicable Models: 12V vehicles Driving Voltage: DC 5V Drive Mode: 1/64 MICROSTEP Drive Current: 30MA Maximum Working Temperature: -40 -105Storage Angle: 340Origin Position Accuracy: CCW: -1.5 -0.5Noise: 22bda Maximum Life Time: 2000hr/min Backlit Colorful LED Lights: White, red, green, blue, yellow, cyan, purple Button Backlight Color Switching: Manual Digital Tube: 3-bit blue light Pointer Drive: High-speed stepper motor Pointer: Red Dial Surface: White text on black background Scale: White Shell: Black Shell Ring: BlackInstallation Opening Size: Approx. 52mm / 2in Diameter }1 x Tachometer1 x Wiring Harness1 x Manual