Bushnell Legend Ultra HD DOA 600 Reticle Centerfire Riflescope (3-9x50-mm) Ultra-strong, one-piece tube design that allows for a waterproof, fog proof, and shockproof scope Superior low light performance with variable 3-9x power versatility; DOA 600 reticle is an excellent choice for hunting whitetails, mule deer, elk and other big game species Features side focus parallax adjustment for adjustable long-range accuracy and a fast-focus eyepiece ED Prime Extra-Low Dispersion glass, fully multi-coated optics bring vivid clarity and contrast, even in low-light conditions Lenses are protected by Bushnell's ultra-effective Rain Guard HD for the clearest possible view in the face of foul weather or condensation from your own misguided breath