Just how big is it anyway and does size matter?
A. We will assume that you are talking about the Hair eRazor and the answer is that as with everything, it is not size but technique, quality and design that matter. The larger, and thus faster, single shaving head is about three times the size of those much bulkier three shaving head razors and thus can deliver as much if not more, raw cutting power. The shaving head also pivots though 360 degrees to overcome awkward angles and is extremely useful for left handed users and perhaps those with arthritis. This shaver measures 4 inches high and 1.5 inches across the foil and is of course very portable and lightweight.
