The Leica Geovid Pro Series Rangefinder Binoculars are a part of the most extensive line of professional-grade laser range-finding binoculars available. The unrivaled combination of optical quality, unique ergonomic design, sophisticated Applied Ballistics ballistic calculation, and the fastest, most-reliable range measurements are the advantages that make the Geovid Pro models the revolutionary and leading pioneer in their class. Out of the box, Geovid Pros are equipped with Applied Ballistics UltraLite, allowing the user to range a target and receive both ballistic drop and wind corrections out to 875 yds. as soon as your rifle's ballistics are programmed into the free and easy-to-use Leica Ballistics app and Leica Pro Track, which allows you to mark a target location via 3 (external) GPS solutions: BaseMap hunting app, GoogleMaps, or Leica's own ProTrack system (accessible through the Leica Ballistics App. Your Geovid Pro's ballistic system can also be upgraded to Applied Ballistics Elite via an in-app upgrade. This allows the Geovid Pro to provide ballistics drop and wind corrections as far as the PRO can range via advanced ballistics corrections available only in Applied Ballistics Elite such as: AB's radar generated custom drag models, spin drift correction, aerodynamic jump, and Coriolis effect. Due to its huge 7mm exit pupil, the 8x56 Geovid Pro is the low-light specialist, offering the best low-light performance available in a range-finding binocular, and as a bonus for those users who need to glass all day, its 7mm exit pupil also makes it the most eye-fatigue-free range-finding binocular on the market. Professional-grade laser range-finding binoculars Range a target and get ballistic drop and wind corrections out to 875 yds. The fastest, most-reliable range measurements Applied Ballistics app: free, easy-to-use, and upgradable Leica Pro Track: allows you to mark a target's GPS location 7mm exit pupil delivers bright images in low-light conditions Eye-fatigue-free range-finding performance