Operational Range: 0–30 m Four vertical lines and one horizontal line Accuracy of leveling: ±1.0 mm at 5 m Line accuracy at 5 meters ±1.5 mm Leveling time <3 sec Range of self-leveling ≤3° Laser Type: Class 3R Red Laser <5mW In the absence of tripods, use the HLLT01152 tripods with laser gain and cross lock functionality. Working temperature: 0 to +40°C Temperature of storage: -20 to +70°C Four AA (1.5V) batteries; weight, empty, 980 g; packaged in a plastic box