1Can clearly observe horizontal and vertical, which to improve measurement accuracy. 2With double photosensitive aperture design, which can increase optical compensation. 3Support 30 sets of data storage, save at any time, view and compare at any time. 4Dustproof level is up to 5, the intruding dust will not affect the normal operation of the instrument. 5Waterproof level is up to 4, in order to prevent splashing water from all directions from entering the instrument and causing damage. 6Support continuous measurement, area volume measurement, Pythagorean measurement, addition and subtraction measurement, area volume addition and subtraction, peak size and selfcalibration functions. Condition: 100% Brand New Item Type: LaserDistance Measure Device Color: As Pictures Shown Material: Electron + Plastic Size: Approx.11.2x5x2.5cm/4.4x2x1in Battery parameters: 2pcs AAA batteries (Not included) Measuring Range: 0-70 meters Accuracy: Approx. 1.5mm/0.5in Laser Type: Class 2 635nm Number of Records Stored: 30pcs Automatically Cut Off the Laser: 30 seconds Automatic Shutdown: 150 seconds Operating Temperature Range: 0-40 Functions: Continuous measurement, area volume measurement, Pythagorean measurement, addition and subtraction measurement, area volume addition and subtraction, peak size, self-calibration function 1 x LaserDistance Measure Device 1 x Hanging Rope 1 x Storage Bag 1 x English Manual