The Explore Scientific Illuminator II now offers exceptional illumination for your VFEI0850–01 and VFEI0850-RA finder scopes OR most any other illuminated finder with a standard illuminator.
The advantage of the Illuminator II is the power provided by 2 alkaline AAA batteries (batteries not included) which will last AT LEAST 100X longer than the traditional illuminator. The Illuminator II also offers variable control from ultra-dim to very intense for proper illumination of the markings in the finder scope.
To install your Illuminator II into the finder, simply unscrew the original illuminator and replace with the Illuminator II. It should be fairly quick and simple.