This digital laser rangefinder has various measurement functions including single/continuous measurement, area measurement, volumes measurement, and Pythagorean measurement. The 40m laser ranging meter is designed for long-distance measurement, adopts high precise laser source, support continuous laser measurement and real-time refresh data, which provides a nice reference of vertical lines for the renovation project. Wide applications, suitable for road, housing, construction, water conservation, electrical power, pipeline, etc. Features: Compact, light and portable, convenient to carry out with you, and you can measure distance whenever and wherever you want. With high hardness aluminum alloy housing, wear resistance and drop resistance, effective dustproof, can provide long service time. High sensitivity focusing lens, quality laser module, low power consumption and long service time. LCD display with backlight, clear definition, you can see the measurement data clearly even in the dim environment. Support 3 units of m/in/ft to switch, metric and imperial units to switch, you can switch according to your needs. The 40m laser ranging meter is designed for long-distance measurement, adopts high precise laser source, support continuous laser measurement and real-time refresh data, which provides a nice reference of vertical lines for the renovation project. One button distance measurement design, high bright laser light, error 2mm, digital display can be accurate to 0.001m. This meter has various measurement functions including single/continuous measurement, area measurement, volumes measurement, Pythagorean measurement, front and rear reference selection, addition and subtraction measurement. Equipped with measurement data storage function, support 20 sets of data storage, important data is not lost and easy to read. Wide applications, suitable for road, housing, construction, water conservation, electrical power, pipeline, etc. Specifications: Name: Laser Rangefinder Material: aluminum alloy Color: silver Battery: 1 * 3.7V, 300mAh battery (included) Display: LCD Range: 0.2-40m Measurement unit: m/in/ft Auto-off laser time: 30 seconds Measurement reference switching: Accuracy: 2mm Laser Type: 620-670nm