The Viper red dot's super low mounting height makes it the perfect solution for handguns with cutout slides. Offers the simplicity and speed advantage of a red dot, while co-witnessing with suppressor-height iron sights. Battery Life: Up to 150 hours on highest setting.Up to 30,000 hours on lower settings. This item is in the category "Sporting Goods\Hunting\Scopes, Optics & Lasers\Red Dot & Laser". The seller is "shopwise2000" and is located in this country: US. This item can be shipped to United States.