NcStar Blue four reticle reflex/QR mount/black (D4BLQ). features: - Blue colored four reticle set: dot, Bullseye, cross, starburst - locking quick release mount for mounting onto Weaver/Picatinny type rails. - LED (light Emitting Diode) 100% safe for the eyes. - Unlimited eye relief for flexible mounting position on a firearm - Blue colored reticles make the reticle pop! makes it easier for the shooter to quickly acquire the Blue reticles against your target and it's background clutter - Blue color reticles alos works great for shooters with Red/green type color Blindness. - 24 x 34mm objective lens offers a wide field of view - lens coating type: Platinum - dot size: 3 MOA - weight: 5.3 oz. - length: 3.2 inch - black anodized aluminum body - uses 1 each CR2032 battery + a spare battery (included - tools for adjust reflex optics zero and rubber lens cap are included