This is, of course, the brand that I wasn’t too impressed with, based on a couple that developed bubbles just sitting in a drawer.<br><br>Interesting that they list different qualities in each size- that’s an unusual approach. Comparing pictures and specs, it looks like the ones I ripped out of the thermometer key fobs are 14mm “AA”. Maybe they’ll do better than the watchband compasses that failed- I don’t remember them in enough detail to guess which grade they might have been, other than that they were liquid filled, and the “B” quality compasses on this site don’t seem to be.<br><br>And they have a 10mm compass. That’s interesting. Ever smaller, ever lighter.. doesn’t have luminous points, though…<br>