I have an Explorer 1 from about 10 years ago. I use it often when i go abroad. Plain. Simple. Reliable. Bullet proof. One of a number of great travel watches for me.
I am considering selling my Explorer 214270 to get this one instead, either with the black or black dial. I like the rounded bezel on the OP39 much better than I do the flat one on the Explorer, which appears too wide