TRUGLO Tru-Brite Xtreme 3-12X44 Ir Bdc Muzzleloader Ultra-high contrast, high resolution mechanical and optical design. Dual-color illuminated reticle allows choice of red or green for faster target acquisition in low-light conditions. Reticle can be easily calibrated to many bullet / powder combinations and provides aiming points out to 300 yards. Waterproof / fog-proof / nitrogen gas-filled. See-thru / flip-up lens caps, optical quality / all-weather. Rubber-coated, speed-focus eye-piece. Specially formulated multi-coatings provide maximum brightness, clarity and contrast even in the poorest of light conditions. Special internal anti-reflective coating on metal parts. Zoom index at 9 oclock for more ergonomic use. Low-profile, large diameter W/E adjustment drums. Durable leaf spring for windage and elevation adjustments. Adjustable rheostat for brightness control. One-piece tube made of aircraft quality aluminum. Durable, textured, non-reflective matte finish. 3V-CR2032 lithium battery. Lifetime Limited Warranty.