Other red dots are made for competition. The Defender-XL is built to win. Target to target. Stage to stage. The ultra-wide sight window enhances field of view, delivering quicker target acquisition, faster, more accurate follow-up shots, and greater flexibility in unconventional shooting positions. Motion activated. Constructed to withstand unexpected drops and the rigors of dynamic shooting. Combined with a bright, adjustable dot, it adapts to any lighting conditions and helps reduce eyestrain in long duration events. Positioning you to dominate every round with smooth, uncomplicated operation, the Defender-XL elevates your game, securing your path to victory. WITH THE VORTEX VIP WARRANTY, YOU GET A VERY IMPORTANT PROMISE To put it simply, no matter how it happens, or whose fault it is, or where you purchased it, if your product ever becomes damaged or defective, Vortex will repair or replace it at no charge to you. This Unlimited Lifetime Warranty is fully transferable and covers all Vortex Optics. There is no card to fill out or need for you to keep any receipts. We will repair or replace your Vortex product in the event it becomes damaged or defective at no charge to you. If we cannot repair it, we will replace it with one in perfect working order of equal or better physical condition. That's it. 8 MOA red dot reticle with manual adjustable brightness Large aspherical lens for distortion-free sight picture Motion activated to be ready to go in an instant 7075 aluminum housing with polymer Shockshield that absorbs everyday impact 100% waterproof, fogproof and shockproof Fast-Rack textured front face for racking slide Impressive 25,000-hour battery life 10-minute auto shut-off to preserve battery life DeltaPointA(R) Pro footprint for versatile mounting Includes Picatinny mount and GlockA(R) MOS adapter plateWhat's in the box: GlockA(R) MOS Adapter Plate Picatinny Mount Rubber Cover Lens Cloth CR2032 Battery Custom Tool Common