1、7.5cm diameter structure, black smoked lens face, and super bright LED backlight. The measuring range is 0‑11,000 RPM, and the RPM shift light is adjustable. 2、This stepper motor is sufficient for a quick response of everything type of professional motor sports. 3、This caliber dial and the needle pointer will provide high visibility. The caliber dial is invisible while the ignition switch is turned off. Once the ignition switch is turned on, a transparent screen with colored LED illumination appears. 4、When the RPMs are exceeded, the warning LED flashes or lights and the warning buzzer will sound. 5、With the function of maximum memory, the maximum RPM during driving can be stored and checked later. 6、The calibrator is adjusted using the exclusive mounting band and the rear base. Item Type: Tachometer Condition: Brand new Material: Aluminum alloy + ABS Color: Black + silver Optional Indicator: Blue LED, white LED, red LED Measuring Range: 0-11,000 RPM Power Supply: 12 V Diameter: Approx.7.5cm/3.0in 1 x Tachometer 1 x Indicator 1 x Switching Unit 1 x Rear Base 1 x Normal Position Bezel 1 x Switch Unit 1 x Rubber Mounting 1 x Line Package 2 x Tape Parts 2- Sided 2 x Engraving Screws 1 x User Manual (English)