and it truly is packed with feature: small, great lens, leaf shutter lens sync at all speed, shutterspeed and aperture visible in viewfinder, AE exposure lock, bright viewfinder, great with flash, off switch, battery test, pc connection, quiet shutter, self timer.
and, you get 40 frames on 36 exposure roll!!!
one downside: It use outdated Mercury 625 batteries but can easily be modified for modern 1.5V
now I’m just starting to wish Olympus will redesign this little beauty with digital sensor. the new pen is to plastic and has no optical viewfinder like Leica M9 and Fuji X-100