Laser diode 635 nm, < 1 mW Laser class 3R Working range with receiver 300 m (Diameter) Levelling accuracy ± 0.1 mm/m Self-levelling range ± 5° (8%) Dust and splash protection IP 54 Rotation speed 150, 300, 600 rpm Power supply 1 x 9 V 6LR61 Block Operating time, max. Rechargeable...