DescriptionReport ItemWARNING:Do now not look immediately into the laser beam! Permanent eye harm could result!Avoid lengthy skin exposure to laser rashes or burns may well occur!This is a red laser collimator with 1" fitting and a detachable 2" adapter, designed for accurate collimation (optical alignment) of all Newtonian and Schmidt-Cassegrain reflector telescopes Specification:1 Brand new & excessive quality2 Red laser collimation beam with 7 brightness phases Can fit into 1" focusers or diagonals4 Removable 2" adapter5 Built with metallic material6 CR2032 Lithium Cell battery 7 Wavelength 635-655nm8 Output power: 1mW9 Class II laser product10 Weight: 12911 Color: Black