I should have mentioned for anyone looking at the finderscope:- The reticule illuminator in the photos is not the one supplied by KK. Theirs is a more compact, constant illuminator with adjustable brightness.
The one attached is larger but has more features. It is a Rigel Systems PulseGuide Illuminator:-
http://www.optcorp.com/product.aspx?pid=1639
A very neat illuminator.