Tangent Theta 5-25x56mm model TT525P Riflescope is an extreme-range precision sighting instrument for professional marksmen. Designed for heavy field use, Tangent Thetas industry-leading development team has used their extensive experience to optimize and refine it for unfailing ruggedness, mechanical precision and unsurpassed image quality. Elevation and windage mechanisms exhibit precise tactile response and feature a truly TOOL-LESS RE-ZERO procedure. Features of TT525P:56mm objective lens34mm main tubeEleven reticle illumination settingsSide parallax adjustmentTool-Less Re-Zero FeatureNon-translating knobs with elevation zero-stopDouble-turn elevation with rev indicator5-25x magnification rangeLockable rapid adjusting diopterWaterproof: 4 Hours @ 10 MetersShockproof: 700g's @ 10.000 Cycles Tangent Theta Model TT525P Professional Marksman 5-25x56mm Illum. 34mm .1 MRAD Gen 3 XR Reticle Riflescope 800100-0006