Utilizing precision laser technology， the RZ-E40 40m Laser Distance Measurer Range Finder provides fast， easy， and accurate measurements every time you use it. It is ideal for measuring work including length， area， tolerance， volume and liquid level， using a laser beam to perform both pointing and measuring applications. And it is easy to use with one-push button and a clear display， definitely a must have in all engineering. Additionally， this handy range finder has a pocket size for easy portability. Don’t hesitate to get one!                                    Features            Utilize precision laser technologyProvide fast， easy， and accurate measurements every time you use itIdeal for measuring work including length， area， tolerance， volume and liquid levelUse a laser beam to perform both pointing and measuring applicationsEasy to use with one-push button and a clear displayPocket size for easy portability                                                             Specifications            Color    Yellow Green !#!amp!*! Black    <br>Distance Measurement Precision    ±2mm    <br>The Biggest Distance Measuring Range    40m    <br>Automatically Cut off Laser    20s    <br>Model    RZ-E40    <br>Measurement Unit Options    mm/in/ft    <br>Laser Level    II    <br>Laser Type    635nm，＜1mW    <br>Automatic Backlight    Yes    <br>Buttons/ Keys Sound    Yes    <br>Automatic Shutdown    150s    <br>Continuous Measurement Function    Yes    <br>Outdoor Target Reflection Board    No    <br>Area Measurement Function    Yes    <br>Volume Measurement Function    Yes    <br>Add and Subtract Measurement Function    Yes    <br>Pythagorean Proposition Measurement Function    Full Mode    <br>Max Storage    99 Units    <br>Minimum/Maximum Measurement    Yes    <br>Operation Temperature     0℃~+40℃     <br>Storage Temperature     -20℃~+60℃    <br>Battery Life    40000 Times for Single Measurements    <br>Battery Selection    (AAA)3 x 1.5 V(Not Included)    <br>Storage Humidity    RH85%    <br>Dimensions    (4.57 x 2.09 x 1.06)" / (11.6 x 5.3 x 2.7)cm (L x W x H)    <br>Weight    5.57oz / 158g     <br>                                                            Package Includes            1 x Instrument Portable Bag<br>1 x Unit<br>1 x Manual<br>