Measuring Range: 0.05 - 70 m Measuring Accuracy: ±2.0 mm Laser Type: 635nm, <1mW, Class 2 Function: single measurement/continuous measurement/indirect measurement/area measurement/Volume measurement/single pythagorean theorem measurement/double pythagorean plus/double pythagorean minus/double area measurement Battery: 2 x 1.5 AAA Operating temp: 0°C ~ +50°C Packed by colour box.