I didn't mean to sound disparaging about the binos; just that there seems to be little or no info available. They may well be a very good bit of kit, I've had a few things from the USSR which have been great.
I bought a small basic calculator at the Polish market in Berlin back when the wall came down, it cost 1 Dm. which at the time was equivalent to circa 30p and it gets used most days still; never even had to change a battery! I hope the binos turn out to be great, no reason why not, eh?....................................atb mac