Feature: 1. This digital tachometer is a high-quality instrument to measure the RPM with wide measuring range and high resolution. 2. It's featured with high accuracy measurement, quick measuring time and long detecting distance up to 500mm/20in with laser. 3. This tachometer is very easy to use by applying a reflective point on the target object, then aim at the point by a laser beam. 4. It has a wide range of applications, including measuring the rotational speed of machines, motors, model car, wheels, lathes for metal or wood cutting operations. 5. The final measurement/minimum is automatically stored in memory and can be displayed at any time. 6. With portable design, anti-drop, anti-skid, and anti-static design, suitable for single hand operating with a comfortable feeling. Specification: Condition: 100% Brand New Item Type: Tachometer Material: Plastic Display: 5 digits, 18 mm (0.7 inch) LCD Testing Range: 2.5-99,999 RPM (R/M) Resolution: 0.1RPM (2.5-999.9RPM), 1RPM (over 1,000 RPM) Accuracy: ±(0.05 % + 1 digit) Sampling Time: 0.8s (over 60 RPM) Detecting Distance: 50-500 mm (2-20inch) (Laser light source ) Time base: 6MHz Quartz Crystal Test Range Selection: Automatic Power: 9V 6F22 Battery (not included) Power Consumption: About 35mA Function: Automatic memory of maximum, minimum and last measured value Size: Approx. 13 x 6.7 x 2.5cm / 5.1 x 2.6 x 1in Weight: Approx. 151g / 5.3oz. Package List: 1 x Tachometer3 x Strips1 x Instruction1 x PU Case Note: Please allow 1‑3cm error due to manual measurement. Thanks for your understanding. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.Please note that the button color of this product will be sent randomly, and make sure you will not mind before ordering.