Rolex

Hi,

Why do water resistance ratings for the current Sub (300m) and Explorer II (100m) differ?  I know the Sub has a Triplock Crown and the Explorer only has a double-lock crown, but is that the only reason for the different ratings?  Or is there something else (case construction, perhaps) that contributes to that difference?

Also, apart from the GMT function on the Explorer II, are the underlying movements fundamentally the same?

Thanks.....
DB Darien

A couple of pics of the pieces....

 

Winding crown ,which I believe has an extra seal fitted.

Only one response?  

My guess is that ther sapphire may be thicker on the Submariner,, which theorically needs a bigger water resistance.

I don't think the case has a different construction.

As for the movements, they are basically the same, except that the Explo II has, of course, a GMT function.

But if you want to dive with your Explo II, no problem.

I guess you won't dive 300 meters deep, by the way.

Best,

Nicolas.

This message has been edited by amanico on 2012-07-25 07:45:06

Sub and Explorer 2 has different case backs and crowns. Sub has Triplock crown and thicker case back and these make the WR difference.

Cal. 3186 (GMT Master 2) and Cal. 3187 (Explorer 2) are similar. The differences are (AFAIK again)

1. Cal. 3187 has bigger base plate,

2. Cal. 3186 has KIF anti shock system and Cal. 3187 has new in house Paraflex anti shock system.

At one point you refer to the GMT II in your post.  I assume you meant Sub, correct?