The beginning of a new era is here. The Genesis is the first of its kind; A compact and durable green laser that requires no battery changes while fitting on virtually any firearm with an accessory rail. Upgrade to Green; it’s more visible during any level of lighting, both day and night. With Genesis, you don’t have to worry about a dead battery standing in your way when you need a laser the most. Specs: Weight: 1.4 oz Wavelength: 532 nm (Green) Power output: 5 mW Battery type: Polymer Lithium-Ion Battery Life: 2.5 hours Battery Recharge Time: 2.75 hours Windage/Elevation: User-adjustable Warranty: One year