Product Review

RPM range is 2.5-99.999 RPM. Accurate measurement without touching the object. 5 digit LCD display screen. Auto zero adjustment. Stores last, minimum, and maximum readings. Laser detection up to 6 feet. Laser wavelength 650 nm. Includes a plastic storage case with foam cushioned insert and operating manual. Runs on 3 AA batteries, included. Quality construction. Class II laser with 1mW power output.