1、Can clearly observe horizontal and vertical, which to improve measurement accuracy. 2、With double photosensitive aperture design, which can increase optical compensation. 3、Support 30 sets of data storage, save at any time, view and compare at any time. 4、Dustproof level is up to 5, the intruding dust will not affect the normal operation of the instrument. 5、Waterproof level is up to 4, in order to prevent splashing water from all directions from entering the instrument and causing damage. 6、Support continuous measurement, area volume measurement, Pythagorean measurement, addition and subtraction measurement, area volume addition and subtraction, peak size and self‑calibration functions. Condition: 100% Brand New Item Type: Laser Distance Measure Device Color: As Pictures Shown Material: Electron + PlasticSize: 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 Laser Distance Measure Device 1 x Hanging Rope 1 x Storage Bag 1 x English Manual