Feature: 1. Multifunctional: This infrared ruler has several measurement functions: distance, area, volume, pythagorean, plus or minus, maximum and minimum, and automatic calibration. 2. Widely Used: This distance meter is widely used in interior decoration, interior design, construction, house renovation, factories, warehouses, etc. 3. Data Storage: This measuring instrument also supports data storage function. You can keep the previous data, which is more convenient for your work. 4. Portable and Easy to Carry: Small in size and light in mass. This distance meter is very easy to carry, you can even put it directly in your jacket pocket. 5. Easy to Use: With one key measurement function, our distance meter is simple to operate and easy to use. Equipped with HD display, the data is more convenient to read. Specification: Item Type: Distance Meter Material: ABS Weight: Approx. 132g/4.66oz Size: 10.5x4.3x2.5cm/4.13x1.69x0.98in Battery (shipped without battery): 2xAAA Measuring Distance: 40m Features: Continuous measurement, area, volume, Pythagorean method, plus or minus, maximum and minimum, automatic calibration function Laser Grade: Level 2 Laser Type: 2 level 635nm, <1mW Storage Record Number: 30 Automatic Laser Cut Off: 20 seconds Automatic Shutdown: 150 seconds Full Charge Working Time: 8000 times Storage Temperature Range: -20℃-60℃ Operating Temperature Range: 0℃-40℃ Storage Humidity Range: 20%-80%RH Battery Charging: Non rechargeable Angle Measurement: Physical level bubble Use Scenes: Widely used in interior decoration, interior design, building construction, road planning, warehouse logistics, housing acceptance, etc.. Package List: 1 x Distance Meter 1 x English and Chinese Instruction