Tacklife HD40 Classic Laser Measure 131Ft M/In/Ft Mute Laser Distance Meter with 2 Bubble Levels, Backlit LCD and Pythagorean Mode, Measure Distance, Area and Volume - Carry Pouch and Battery Included EXCELLENT ACCURACY - 2 Bubble Levels provide more precise measurement compared to one bubble; Accuracy:1/16 inch; Measuring range ups to 131 feet to meet your regular measuring need; Hold the U button 2s to switch unit among M/In/Ft freely BETTER STEADFAST OPERATION - Handy and compact mode provide good operating feeling; Supplied durable carrying pouch keeps the laser meter off dust; It also for easy carry and hold everywhere; Large LCD with back light supports better visibility in low-light conditions FUNCTIONAL SETTINGS - Automatic calculation of area and volume; 30 groups data memory; Manually delete data; 6 units for selection; Calibration; Addition and subtraction; Automatic shutdown without operation 150s; Max&Min values measurement EASY & QUICK MEASUREMENT - With multiple measurement modes like distance, volume, area measurement, continuous measurement and measurement by Pythagoras, assures you a fast job, ideal for home, construction and industries, especially in large areas such as rooms, apartments, buildings, real estates, factories, warehouses, etc PACKAGE CONTENTS - Tacklife HD40 Laser Measuring Device 131Ft; AAA Batteries; User Manual; Portable Bag; Hand Strap; Package Box; 24 Months Warranty The Tacklilfe HD40 Classic Laser Measuring device is portabe and super easy to use; It is designed with versatile functions and especially for needs of high-precision distance measurements by using Laser Precision Technology 2 bubble levels, which provides more precise measurement compared to one bubble; Measuring range up to 131 Ft, Remarkable accuracy is 1/16 inch; Fast measurement speed can improve your work efficieny greatly Measuring accuracy: 1/16 inch Measuring units: M/In/Ft Display: Large LCD Backlit Laser class: Class 2 Battery type: 1.5V 2*AAA(Included) Based on measured Length, width and height, gets you smart volume and area calculations, no need of manual operation any more Small Body fits in hand perfectly, gives you convenient operation; You can put it in your pocket or carry it everywhere Date storage: 30 Groups Manually delete unwanted data Self-calibration 6 units for selection Addition and subtraction Automatic shutdown without operation :150s Automatic calculation of area and volume