Suaoki Laser Measure 131Ft, Measuring Device with Continuous Measurement Mode, Digital Tape Measure 0.2 to 40m HIGH ACCURACY: easily target with bright focused laser point, 1/12 In. (+/- 2 mm) accuracy and even more accuracy if mounts on a tripod (not included) INTUITIVE OPERATION: one handed operation, slide down a switch to power on and press only one button to quickly measure distances; the triple-line LCD is just right for further calculation by yourself CONTINUOUS MEASUREMENT: this measuring device features a continuous measurement mode to directly measure the real time distance when its powered on 4 UNIT MEASUREMENTS: long press the new designed button to switch the units (m/ft/in/ft+in) for your accurate calculation and automatically keep the setting before your next usage COMPACT AND PORTABLE: excellent durability, easily slip this handy meter into your back pocket which makes it extremely mobile and almost unnoticeable no matter where you go Product Weight: 60g (w/o batteries) Measuring Range: 0.65 - 131.24 ft.(0.2-40m) Measuring Accuracy: +/- 0.078 in Measuring Units: m/ft/in/ft+in Laser Class: Class 2; 630 - 670 nm; &lt;1 mW Modes: continuous measurement Measuring Start Point: from rear of unit 1x Suaoki D5 Laser Distance Meter 2x 1.5V AAA Batteries 1x Lanyard 1x Multi-language User Manual