Feature: 1. Infrared rangefinder, with high‑definition large screen, measurement data can be clearly displayed. 2. Using 620‑690nm<1mw laser ranging, the measuring range is 0.05‑100m, with high accuracy. 3. There are anti‑skid stripe on the side to increase friction and prevent slippage. 4. Comfortable button design, suitable for finger size, high sensitivity and easy operation. 5. Suitable for length measurement, height measurement, area measurement, volume measurement, and Pythagorean theorem measurement. Specification: Item Type: Distance Meter Material: ABS Purpose: 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 / 0.2-328.1ft Measurement Accuracy: ± 2mm Laser Type: 620-690nm ＜1mw Operating Temperature Range: 0℃-40℃ Waterproof: IP54 How to Use: 1. Insert the battery (not included), turn on the switch 2. Select by function 3. Complete ranging 4. Data storage. Package List: 1 x Distance Meter (Battery Not Included)1 x Paper Board1 x Hanging Rope1 x Manual