【High quality】 The tachometer adopts single-chip microcomputer technology, photoelectric technology and anti-interference technology, can accurately measure speed. 【With large LCD display】 The photo tachometer is made of high quality plastic, with large LCD screen, the data display is clear and precise. 【Feature】 The digital tachometer has a beautiful and generous appearance design, easy to use and comfortable, easy to use and maintain, superior performance. 【Easy to use】 The pocket tachometer has low battery indication function, automatic shutdown function, an automatic shutdown after about 15 minutes without any key operation. 【Advantage】 The speedometer has a wide measuring range and high resolution, automatically stores the maximum, minimum and last displayed values ​​of measurements . Specification: Condition: 100% Brand New Item Type: Tachometer Material: plastic Color: as shown in the picture Size: approx. 150x65x31mm / 5.9x2.6x1.2 inch Display: 5-digit 18mm LCD Accuracy: ± (0.05% + 1) Range selection: automatic range Effective distance: 50-500mm / 2.0-19.7in Power supply: 4 x 1.5 V AAA batteries (not included) Power consumption: less than 40mA Measuring range: Photoelectric speed: 2.5-99999 rpm Contact speed: 1.0-19999rpm Contact line speed: 1.00-1999.9 m / min Resolution: Photoelectric speed: 0.1 rpm (2.5 to 999.99 rpm) 1 rpm (above 1000 rpm) Contact speed: 0.1 rpm ( 0.5 to 999.99 rpm) 1 rpm (above 1000 rpm) Contact line speed: 0.01 m / min (0.05 to 99.999 m / min) 0.1 m / min (above 100 m / min) List packages: 1 x tachometer (battery not included) 5 x tachometer accessories 1 x instruction manual Note: 1. Please allow 1-2cm error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.