What is (are) the difference(s) between these two models?
Is is just the regions they are available to, since I find limited results for the BMS-1? Also their pricing, the B-1 is at $120-150 and the BMS-1 at $230-250.
From images the BMS-1 looks to have a much brighter display but that can always just be a couple of good photos. Aside from that they appear to be the same watch unless I am missing something?