The TSN-880 series feature Kowa's proprietary PROMINAR® Pure Fluorite Crystal lenses, which virtually eliminate chromatic aberration. Bright and sharp at all powers, the high quality of the image is especially noticeable at higher powers. Their new 880 series scopes have a lightweight magnesium alloy body that is nitrogen-charged and waterproof. The 88mm lens gathers 30% more light than a 77mm. At higher magnifications and low light situations, this may set new standards. Several eyepieces are available and sold separately.
Note: TSN-770 and 880 Series spotting scopes require different eyepieces than the 660 series; they are not interchangeable.