Feature 1Infrared rangefinder, with highdefinition large screen, measurement data can be clearly displayed. 2Using 620690nm<1mw laser ranging, the measuring range is 0.05100m, with high accuracy. 3There are antiskid stripe on the side to increase friction and prevent slippage. 4Comfortable button design, suitable for finger size, high sensitivity and easy operation. 5Suitable for length measurement, height measurement, area measurement, volume measurement, and Pythagorean theorem measurement.Item Type: Distance MeterMaterial: ABSPurpose: Infrared Ranging (Length Measurement, Height Measurement, Area Measurement, Volume Measurement, Pythagorean Theorem Measurement)Battery Attributes: 2 x 1.5V AAA Battery (Battery Not Included)Measuring Range: 0.05-100m / 0.2-328.1ftMeasurement Accuracy: 2mmLaser Type: 620-690nm 1mwOperating Temperature Range: 0-40Waterproof: IP54How to Use:1. Insert the battery (not included), turn on the switch2. Select by function3. Complete ranging4. Data storage .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Distance Meter (Battery Not Included)1 x Paper Board1 x Hanging Rope1 x Manual