Features: Compact design, mini size and portable. Wide Range of Measurement and high resolution. Automatic and manual measurement functions Data record and recall (60 Readings Max) Max/Min/avg value record function. Record time interval setup function. LCD with White backlight. Stable performance and low consumption. Descriptions: Measuring range: 2.5-99999RPM Resolution: 0.1RPM,at 2.5~999.9RPM;1RPM,at 1000~99,999 RPM Accuracy: 0.02%+1digtal Measuring distance: 50~500mm Response time: 0.5s(above120RPM) Operating temperature: 0 to 50(32 to 122oF) Operating humidity: 10 to 90%RH Storage temperature: -10 to 60(14 to 140oF) Storage temperature: 10 to 75%RH Specification: Model: TL-900 Voltage: 9V Color: black & blue Size: 145*90*35mm Package includes: 1 x Portable Laser Digital Tachometer Notes: Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. Please allow slight measurement deviation caused by manual measurement, thank you for your understanding.