Laser dot clearly visible up to 30M Functions: Single Measurement Tracking function Area calculation Protection Class : IP54 Measuring Range : 0.2 - 30 m Storage temperature range : -25 - 70 degrees Typical measuring tolerance : ?2.0mm / 10m Max measuring tolerance : ?3.0mm / 10m Diameter of laser point : 6mm / 10m Laser type : (Laser class 2) : 635nm Standard Equipment : AAA 2x1.5V batteries