Swarovski Optik designed the 5-25x56x50 X5i Riflescope with an incredibly wide magnification range and large over-sized objective to provide shooters a platform to confidently and accurately shoot from the first pre-dawn glow to the day's last ray of sunlight. The X5i employs an array of technologies that can put you on-target at distance, while maintaining the ability to precisely place shorter shots. Its performance begins with Swarovski's iconic proprietary SWAROTOP and SWARODUR anti-reflection coatings. The entire optical path is fully multicoated to maximize light transmission for bright, high-contrast images, especially in low-light conditions. They use multi-rotational turrets with 1/4 MOA impact point correction to precisely put you on-target faster. The windage turret features a 50 MOA adjustment range; while the elevation boasts a broad 82 MOA range for accurate long-range BDC. Its SUBZERO function allows you to go up to 10 MOA below a pre-set Zero to make closer shots that long-range scopes are unable to accomplish accurately. Finally, a partially-illuminated modified crosshair reticle has 10 intensity levels to ensure easy visibility in all light conditions.Optical Performance5-25x zoom magnification56mm objective lensAnti-reflection fully multicoated optics with proprietary SWAROTOP & SWARODUR coatings create bright, high-contrast imagesSWAROCLEAN: non-stick coating on the lenses makes it easier to clean away dirt, water marks, insect repellents, or tree resinReticleIlluminated BRM-I+ modified duplex crosshair reticlePositioned on the second (rear) focal planeReticle size remains the same at all magnificationPlain outer posts on horizontal and lower vertical axes, with illuminated crosshairsUpper half of the reticle empty for unobstructed viewsStadia markings on horizontal, lower vertical axes with a short crosshair on upper axisRuns on one included CR2032 battery with a max runtime of 260 hoursUse and Handling1/4 MOA per click impact point correction50 MOA windage and 82 MOA elevation adjustment range, 20 MOA per rotation travelElevation turret has a viewing window to clearly see the revolutionSUBZERO function allows the shooter to go up to 10 MOA below a pre-set Zero for closer shotsParallax correction from 55yd (50m) to infinity3.7" long eye relief, -3 to +2 dioptric correctionConstruction Details30mm one-piece main-tubeLightweight and durable aluminum alloy housingCorrosion and scratch-resistant matte-black anodized finishStainless steel patent-pending Spring Retention and Lever System ensures consistent performance under heavy recoilNitrogen-filled. Fogproof, submersible to 13' (4m)Broad -4 to 131degF operating temperature range