Vortex Solo Tactical R/T 8x36 Monocular with Reticle Focus Ultra-compact and lightweight, the Solo Tactical R/T monocular delivers big-time optical quality in a palm-sized package. Built to exceed your expectations with generous eye relief and optical performance normally reserved for binoculars, the Solo R/T delivers bright, clear views anywhere. The R/T ranging reticle for precise target range estimation features mrad-based subtensions also includes a secondary quick-ranging system with silhouettes. The reticle focus ensures a sharp reticle iamge at all distances. Optical Features Fully Multi-Coated Lenses Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces. Construction Features Waterproof Optics are sealed with O-rings to prevent moisture, dust, and debris from getting inside the monocular. Fogproof Nitrogen gas purging delivers fogproof and waterproof performance. Rubber Armor Provides a secure, non-slip grip, and durable external protection. Convenience Features Reticle Focus Ensures a sharp reticle image at all distances. Utility Clip Allows for multiple attachment points and quick field access. Flared Eyecup Blocks stray light and folds up and down for comfortable viewing with or without eyeglasses. Ultra Compact and Lightweight. Ranging reticle for holdover and windage corrections. Waterproof and Fogproof. Reticle Focus for sharp reticle image. Flared Eyecup blocks stray light.