Swarovski Binocular Booster for all EL and SLC models (except 8x30 WB). Will double the magnification. Example: the Swarovski binocular booster transforms the SLC 15x56 WB into a monocular telescope with 30x magnification.

Easy to assemble. Simply unscrew one of the twist-in eyecups and screw on the booster. A "pocket telescope" easy to carry and very cost effective.