Excellent light transmission. Pinpoint accuracy in any condition. Uncompromised durability. These are the features that set the Trijicon Tenmile 4.5-30x56 long-range riflescope apart. The 34mm tube provides generous elevation and windage adjuster travel. You can also expect crisp, precise adjustments with zero stop; extra-low dispersion glass for true color and detail without distortion; and dual red/green illuminated reticles that let you enjoy "both-eyes-open" shooting for fast engagement. Features: Pinpoint aiming in any condition - models feature options for precise milling or holdover reticles available in first or second focal plane for ensured accuracy Edge-to-edge clarity - fully multi-coated, broadband, anti-reflective glass provides excellent light transmission, true detail and color with zero distortion Increased adjuster range - 30mm tube offers increased adjuster range and durability Ultra durable for ensured reliability - aircraft-grade aluminum and ruggedized design engineered to withstand extreme conditions and tested to military standards and protocols Quick and easy adjustments - crisp, precise, windage/elevation adjusters require no tools, capped or zero stop adjusters ensure no accidental shift Confident aiming in any light - user-selectable led brightness settings with an "off" in between each setting to adapt to any environment Optimal flexibility - generous windage and elevation adjustment for maximum total travel Repositionable magnification lever - accommodates different shooting positions and rifle configurations 5 red and 5 green illumination settings Led illumination source First focal plane 39 hr red and 94 hr green battery life