Item Type: Laser Distance Measure Material: Aluminum Alloy Battery: Li ion Battery 402030 (Ship with Inbuilt Battery) Battery Capacity: 200mAh Measuring Range: 0.05 to 40meter / 0.16-131.2ft Measurement Accuracy: ±2mm Unit: M, Ft, in Measurement Time: 0.1 to 3 Seconds Dustproof and Waterproof: IP54 Electronic Level: 0 to 90° ±1° Rrror Scope of Application: Area, Volume, Distance, Pythagorean Measurement Functions 1、6 Measurement Modes: The 6 measurement modes include distance, minimum, maximum, plus, minus, area and volume, and Pythagorean measurement functions to quickly measure houses, rooms, backyards, or entire construction sites. 2、High Accuracy: The laser measuring tool can complete a measurement within 0.1 to 3 seconds, and the measurement accuracy is ±2mm. The measuring range is 0.05 to 40(m). 3、Switching Measurement Units: When the laser rangefinder is off, press and hold the button for 5 seconds, you can easily switch units of measurement between In, M, Ft. A reliable partner for landscapers, carpenters and painters. 4、USB Fast Charging Technology: The laser tape measure adopts USB fast charging technology, which supports 3500 measurements at a time, and has a built in 200mA lithium battery, which brings great convenience to the measurement data. 5、Easy to Use: The laser tape measure will not sag or bend, saving you time and increasing your efficiency by getting more accurate readings without assistance on longer distance measurements.