3 in 1 Laser Distance Meter Digital Measuring Instrument laser distance meter Tape Measure Distance Area and Volume Tool. Laser Type = 650 nm, <1mW. Batteries Type AAA 2 x 1.5V Auto. laser switch-off After 30 seconds. Laser Class = Class II. Laser measurement. Product Description * 3-In-1 Tool ----- Only one device on the market can deliver three high-quality tools in one. Combining a laser measure, tape measure, and 90°cross line laser leveler, this tool will be your secret weapon on any project. Expertly take long-distance measurements, get precise tape measurements, and never double-check if lines are straight again. Laser rate: ≤ 1 mW, CLASS II * Instant Calculations ----- Instantly calculate differences of distance. Find area and volume with one click of the button. Keep continuous measurements or deduce Pythagoras all in one handy tool. This 3-in-1 tool keeps a high-level accuracy of ± 2 mm all while supporting three units of measure: meters, feet, or inches. Whatever the job requires. * Work Smarter ----- Work smarter, not harder with four functions designed to help you get through any sized project quicker and easier. Store up to 20 measurements on the tape setting. Fit different measuring sites as you’re able to change the reference standard. Hands-free shut down after 180 seconds. Get accurate and precise long-distance measurements of up to 40 meters. * Strong and Stable ----- We’ve not only included functions to help this be the best measuring tool in your kit, but we’ve also added features to improve the performance. First, we’ve incorporated a large screen to see measurements more clearly, even under strong sunlight. Second, no more fumbling or dropping this tool with an ergonomic and anti-collision design. Lastly, stability is greatly improved as this tool attaches easily to any ferrous material. Function: measure distance,area,volume by laser measure short disatance by tape Cross line laser level