Green laser pointers are significantly brighter (about 60 times) than a red laser pointer and because of its unusual colour it is much more noticeable. A 532 nm green laser wavelength is obviously superior to a laughable 650 nm red laser wavelength. And unlike a red laser, the green beam itself can be seen in mid-air in dark conditions, not just the laser beam dot. This allows the green laser pointer to be used for pointing to star constellations (sky pointing) and also just generally look cool as hell. The green laser beam dot can be seen at much greater distances than with a red laser pointer. Feature: 100% BRAND NEW Professional Grade 1mW Green laser pointer Latest microelectronic Green Laser Technology with significantly brightest. Solid, heavy duty construction Pen shape design with pocket clip Ideal tools for teaching, presentation, museum, tour guides, sky pointing, collimation and laser exploration Quick convenient push button switch Specific: Visibility: Over 5000 ft in certain darkness environment Wavelength: 532nm Dimension: Appro. 156mm x 14mm(Diameter) Batteries Type: AAA 1.5V x 2pcs (Not Included) Cautions: Avoid direct eye exposure to laser beam Packing includes: 1 x Green Laser Pointer