Product Specifications: Color: Black + Yellow Material: ABS Display: Backlit LCD Measuring Range: 0.5~19999RPM 0.05~1999.9m/min 0.2~6560ft/min Resolution: 0.1RPM (0.5~999.9RPM)/1RPM (above 1000RPM) 0.01m/min (0.05~99.9m/min)/0.1m/min (above 100m/min) 0.1ft/min (0.1~999.9ft/min)/1ft/min (above 1000ft/min) Accuracy: (0.05%+1digit) Sampling Time: 0.8s (above 60RPM) Power Consumption: Approx. 30mA Power Supply: 3 * 1.5V AAA Battery (Not Included) Working Environment: 0~50C / 32~122F Storage Environment: -10~60C / -14~140F Item Size: Approx. 17 * 5.6 * 3.5cm / 6.7 * 2.2 * 1.4in Item Weight: Approx. 125g / 4.4oz Package Size: Approx. 20.5 * 11.1 * 6cm / 8.1 * 4.4 * 2.4in Package Weight: Approx. 230g / 8.1oz Packing List: 1 * Digital Tachometer Product Advantages: Efficient contact measurement using single-chip microcomputer and electro-optical technology. Wide measuring range and high resolution. LCD display with clear indication Max./Min./Last value measurement. Equipped with a linear channel rate sensor, it is easy to measure the linear rate of wires, cables, etc. Convertible accessories for different measurements. Includes a low battery indicator and automatic shutdown. Comes with a protective pouch for easy storage. Product Description: Wide measuring range and high resolution. LCD display with clear indication Effective contact measurement using a single-chip microcomputer and optoelectronic technology. Convertible accessories for different measurements. Max/Min/Last measured value. Equipped with a linear channel flow sensor for easy measurement of the linear speed of wires, cables, etc. Includes a low battery indicator and automatic shutdown. Comes with a protective pouch for easy storage. luckymeet