Features:Higher accuracy: Indicators for measuring reference marks/battery level/buzzer indication/signal strength. Our products can quickly measure distances, areas and volumes. The measuring range is 40 and the accuracy is up to 3 mm. Easy to operate: The convenient and compact design provides a good handheld operating experience. The LCD display with backlight is very clear and you can easily read the data. The bright laser pointer makes it easy to target. They include distance/area/volume/single/max and min/continuous measurements and 3 indirect measurements via the Pythagorean theorem. It has a hand strap and handheld design for your convenience. In addition, our products also have a buzzer indicator light. Manual shutdown, 45 seconds no operation automatic shutdown, 15 seconds laser automatic shutdown, easy to use. Wide range of applications: Our products can be used in construction and industry, especially in large areas such as rooms, apartments, buildings, real estate, factories, warehouses, etc. ABS -- Measuring range. 0.03-40m -- Measuring time: 0.3-4s -- Distance unit: m/in/ft -- Area unit: m/ft -- Volume unit: m/ft -- Accuracy: 3mm -- Laser type: Class II, Laser wavelength 620-670nm.