Laser class2 <br/>Wavelength635 nm <br/>Light output< 1 mW <br/>Measurement range0.05 - 60 m // 0.2 - 197 ft <br/>Measuring accuracy± 1.5 mm / ± 1/16 " <br/>Number of measurements per battery charge5000 <br/>Protection type IPIP 40 <br/>Weight (with batteries)0.11 kg / 0.24 lbs <br/>Laser functionsLength / Area / Volume / Continuous measurement (tracking) / Pythagoras 1 / Pythagoras 2 / Minimum tracking / Maximum tracking