Kowa TSN-88S PROMINAR 88mm Straight Spotting Scope BodyThe Kowa TSN 88S PROMINAR 88mm Straight Spotting Scope Body replaces the Kowa TSN 884 spotting scope body. It uses the same eyepieces used with the TSN 99, TSN 880, and TSN 770 spotting scope bodies. Optically, the TSN 88S has an additional multi coated and KR coated convex lens in front of the fluorite crystal convex lens. This system of lenses and upgraded lens coatings results in improved light transmission across the entire visible spectrum for