Sentry 12-36x50 Ultra Compact Spotting Scope With Window Mount by BUSHNELL OPTICS Precision optics with a powerful magnification range. Features: ED Prime Extra-Low Dispersion glass 2-speed dual focus controls RainGuard® HD water-repellent lens coating *Warranty Info: Bushnell spotting scopes are covered by a Limited Lifetime Warranty. Bushnell Outdoor Products guarantees these products to be free of defects in materials and workmanship for the lifetime of the original owner.