Laser diode 635 nm, < 1 mW Measurement range 0,15 – 20,00 Laser class 2 Measurement accuracy, typical ±3.0 mm Measurement time, typical <0.5 s Power supply 2 x 1.5 V LR03 (AAA) Automatic deactivation 5 min. Weight, approx. 0.13 kg Units of measurement m/cm, ft/inch Battery lifetime, individual measurements, approx. 5,000 Battery lifetime, operating time, approx. 5 h Dust and splash protection IP 54