Measuring Range: 0.05-60m Measuring Accuracy: ±3.0mm Units of measurement: m/ft/inch Material: ABS+TPR 30 group data storage Laser Type: 635nm, <1mW, Class 2 Operating temp: -10°C ~ +50°C Function: length, area, volume, triangle With power off function Power supply: 2x LR03 AAA batteries Unique design