Kowa Pure Fluorite Crystal Flagship Model with a Large 88mm Diameter Lens The flagship of Kowa spotting scopes with an extremely large 88mm objective lens. The enthusiasm behind Kowa’s 50 years of spotting scope development is manifested in this supreme model. Its optical performance and user friendliness leaves a satisfying impression on the user. Industry leading 88MM FLUORITE CRYSTAL LENS HIGH-END PROMINAR MODELS: The pure fluorite crystal used in these models is the optimum optical material for reducing chromatic aberration, providing the ultimate viewing experience. LARGE LENS, COMPACT SIZE: The inner focus system keeps the prism box light and compact while the large 88mm objective lens ensures overwhelming brightness. MAGNESIUM ALLOY BODY: The magnesium alloy body decreases the weight of the scope while providing a rugged structure that can withstand the severest conditions. DUAL FOCUS MECHANISM (QUICK & FINE FOCUSING): The dual focus mechanism allows focusing in two revolutions and fine pinpoint accuracy in one system. EYEPIECE LOCKING MECHANISM: The eyepiece locking mechanism secures the eyepiece to the scope body and prevents it from getting lost or falling off suddenly. TRIPOD MOUNT: The addition of a brass insert to the tripod mount of the scope allows the scope to be secured to both 1/4 and 3/8 inch mount tripods. WATERPROOF & FILLED WITH DRY NITROGEN GAS : The housing is waterproof to JIS* Protection Class 7** and filled with dry nitrogen gas to prevent the lens from fogging. *JIS=Japanese Industrial Standard **The Scope is not intended for use underwater Kowa TSN-883 88mm Prominar Angled Spotting Scope Body