Features: 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. Specification: Condition: 100% NewItem Type: LaserDistance Measure DeviceColor: As Pictures ShownMaterial: Electron + PlasticSize: Approx.11.2x5x2.5cm/4.4x2x1inBattery parameters: 2pcs AAA batteries (Not included)Measuring Range: 0-70 metersAccuracy: Approx. 1.5mm/0.5inLaser Type: Class 2 635nmNumber of Records Stored: 30pcsAutomatically Cut Off the Laser: 30 secondsAutomatic Shutdown: 150 secondsOperating Temperature Range: 0-40Functions: Continuous measurement area volume measurement Pythagorean measurement addition and subtraction measurement area volume addition and subtraction peak size self-calibration function Package List: 1 x LaserDistance Measure Device1 x Hanging Rope1 x Storage Bag1 x English Manual