I bought a pair of Barz Optics with 2 x magnification in them about 18 months ago and have found them to be brilliant. One lens however did develop a minor problem which was frustrating. I attended the Sanctuary Cove boat show recently and found the Barz Optics stand. I spoke with the guy at the stand and showed him the problem. Less than a minute later the problem was solved. Great service, great glasses. Thanks