Waterproof Astronomy Military Green Laser Pointer Tactical Pen 5mW+18650 +Charger * outside, point in the sky because you can see the green beam leading up fun for looking at star, having your pet chase the light around the yard, and whatever else you can think off. Output power: Best Blue-violet Beam for your buck!!!! * This is a must-have tool for Photographers/Artists, Astronomers, Teachers, Students, Bird Watchers, Professionals and Executives, Tour Guides, Rescuers & Search Personnel, Construction Engineers and Workers, Scientists, Security, Police (Forensics Investigations), Campers, Hikers, (Dogs and Cats LOVE chasing the laser dot) , etc. * NOTE: This is a high power laser unit. It should not be pointed at any person or animal"s eyes. Exposure to the eyes can cause serious injury or blindness. We will not be held responsible for any injuries resulting from the use or misuse of this item. Please follow all local and international laws when using this product. * Laser color: Green Class 3A: < 5mW Wavelength: 532nm