Rifle scope 3-9x magnification 40mm objective lens (adjustable objective) 1"tube 1/4 MOA (1/4"click value @ 100 yds) Mil-dot reticle (red/green illuminated*) 5 yds to infinity parallax adjustment 34.5 ft to 11.5 ft field of view 3.9"to 3.2"eye relief 13mm to 4.5mm exit pupil 21.1 oz. 12.60"long Includes 1 CR2032 battery, flip-open lens caps, 3 hex wrenches, hex screw and 3/8"high profile rings Other features: True Strength scope Emerald-coated optics (95% light transmission) Nitrogen-filled Shockproof Fogproof Rainproof Zero lock/reset target turrets Black matte finish *If you don't use the illumination, the reticle will be black. A very versatile scope, this UTG 3-9x40 scope has an adjustable objective that lets you get up close and personal with your target...whether it's a rabbit nibbling on your vegetable garden or a soda can waiting to be popped downrange. The optics are remarkably sharp, will give you a clear picture and reduce the chances of missing that important shot. Don't let the economical price fool you into thinking this is a cheap scope...it's inexpensive, but it's not cheap! You could pay a lot more for a hunting scope, but you don't have to. This will serve just about all your shooting needs. This rifle scope comes with rings that fit most rimfire rifles and air rifles. If yours has a Weaver rail or you'd like to mount this on your centerfire rifle or airsoft rifle, buy a set of Weaver rings.