Element Optics has designed the HELIX in a way that puts the important things first: clear glass, smart reticle, innovative features and a turret system superior to other products in the same price class. The HD takes things one step further, with ED Glass, Reticle Illumination, a massive Zoom Range and more Elevation Travel. They’ve capped both the windage and elevation turrets for a more hunter-friendly, compact feel. Stringent quality control procedures give you peace of mind when taking that critical shot, and if something goes wrong, a Platinum Lifetime Warranty has you covered! 30mm Main Body Tube 8x Zoom Optical System Compact, Lightweight design Second Focal Plane Reticle Aircraft Grade Aluminum Side Parallax: 10m-Infinity Fully Multi-Coated Lenses with HD Glass Capped, Resettable Turrets Removable Magnification Throw Lever Waterproof, Fogproof, Shockproof & Nitrogen Purged Sunshade, Lens Cloth, ‘Cheat Sheet’ Stickers & Clear Lens Caps Included NEW Product Overview: Helix HD & Helix HDLR 2-16x50 SFP: https://www.youtube.com/watch?v=eO5XX9nFzfg RAPTR-1 Reticle Guide SPECIFICATIONS MAGNIFICATION RANGE 2-16x TUBE DIAMETER 30mm OBJECTIVE LENS DIAMETER 50mm EXIT PUPIL 8.5-3.1mm EYE RELIEF 101.6mm (4″) FIELD OF VIEW @100m: 20.2 – 2.51m CLICK VALUE 1/10 MRAD (6 MRAD / REV) ELEVATION ADJUSTMENT RANGE 100 MOA / 29 MRAD WINDAGE ADJUSTMENT RANGE 45 MOA / 13 MRAD MINIMUM PARALLAX 10 YDS / 10 METERS LENGTH 13.39 Inches / 340mm WEIGHT 25.6oz / 728gr