With green laser (DPSS) light beam of 532 nm wavelength. Not visible for wild. No brightening, almost no light scattering, bundled laser light beam (divergence approx 0,05mrad) and easily focusable by focusing on the lamp center. Suitable for distances up to 250 m. Laser Class: 2M, laser power: 9mW. Suitable for use from -5 - +45 ° C. operate with pressure switch or with cord switch. Requires 1 CR 123A batteries Art. 123370>/b> (please order seperately). For up to 6 hours. Black aluminum case. Length: 16.5 cm, OD: 3.2 cm. Weight: 180 g.