These are the brightest and clearest T1 styled replicas on the market from holy warrior, holy warrior is a brand with a great reputation and for good reason, this particular unit stays true to the T1 with 12 brightness settings and excellent daylight brightness. These units have crystal clear glass, no parallax, thin walls, true 1x resulting in comfortable shooting with both eyes open, long battery life, real steel rated recoil resistance and work great on a large variety of builds Specifications: 6061 Aviation Aluminum 12 brightness settings (multiple daylight brightness settings) Comes with 1.94” FAST style riser for a 2.26” optical centerline and a flat plate for lower mounting. Real Steel Rated recoil resistance IP47 waterproof rating Weight: 160g Power source: cr2032 disc type battery Package includes: hard case for shipping and transport T1 Flat plate FAST riser Instructional manual