The Leupold Mark 4 12-40x60mm tactical spotting scope with the Tremor 4 reticle gives you the brightness and clarity necessary for positive target identification in any conditions. Built to survive shocks, blows, drops, and impacts, it's not only tough, it's also 100% waterproof and fogproof.Boasting Leupold's Professional-Grade Optical System, it offers unmatched light transmission that's designed to outperform in the most challenging lighting conditions. Its industry leading glare reduction provides a clear image in harsh, direct light, while the resolution and clarity will meet the demands of any professional guide or shooter in the field.Countless military sniper teams have trusted the Mark 4 tactical spotting scope. You can depend on it, too. This rugged spotting scope is designed, machined, and assembled in the USA and is guaranteed for life.Professional-grade Optical System - Leupold's Professional-Grade Optical System offers unmatched light transmission that's designed to outperform in the most challenging lighting conditions, industry-leading glare reduction for a clear image in harsh, direct light, and the resolution and clarity that professional guides and shooters demand in the field.Folded Light Path - Folded light path technology helps achieve a compact, lightweight design.Diamond Coat 2 - Exterior lens surfaces are treated with DiamondCoat 2, an ion-assist lens coating, for higher light transmission and the greatest level of abrasion resistance we've ever offered. DiamondCoat 2 has the additional advantage of assisting in light transmission, for greater brightness, clarity and contrast, and will prove its worth in the wildest places on earth.Tripod Ready - A built-in 1/4-20 rotatable tripod adapter port makes it easy to mount to a tripod.Carbon Fiber Housing - A rugged carbon fiber housing protects the optic.Waterproof And Fogproof- Leupold pioneered modern waterproof and fogproof technology using advanced internal gasses and sealing methods that withstand extreme temperatures and elevation changes, so the internals of the optics stay moisture free and crystal clear for life.