Built upon SIERRA3 award-winning technology, and the SIG SAUER BDX Ballistic Data Xchange technology, the SIERRA6 family of riflescopes provides the hunter or marksmen with an intelligent auto-holdover specific to their ballistics, target, and environment. Pairing a SIERRA6 to a BDX equipped rangefinder allows users to bring the capability of Applied Ballistics into the field without the need for a mobile device.Features :Integrated BDX Ballistic Data Xchange 2.0 with Up to 95% Light TransmissionAdvanced HDX(R) 6x Optical SystemAutomatic Hold-over Dot on a Digital Focal PlaneBallistic Profiles Compatible with Centerfire, Muzzleloader, and Crossbow PlatformsInnovative KinETHICTM Kinetic Energy Transfer Indicator for Ethical ShotsDependable Waterproof and Fog-Proof Performance (IPX-7 for Complete Immersion up to 1 Meter)Argon Purged for an Enhanced Lifetime of PerformanceLevelplexTM with Auto Levelplex Mode