after using these glasses I noticed that a few thing were not quality material .there was a little compass in between the adjusters that was pointing south when I was walking east . then the adjusters would stick and then wouldn't adjust properly . the right eye adjuster would not hardly come into focous and not ajust properly I would not get these I I was to purchase again
I would have given these a 5 star rating, except I find them too heavy for comfortable bird watching. Maybe a grown man would like them very much, but I'm a 67 yr old woman.