2 Answers

EFG is a special process that ensures a crystal that has none of the imperfections that link would cause it to shatter under the sorts of pressure that the Ultra Deep was designed to withstand. The crystal has AR coating on both link sides and also uses a unique shape to further aid in pressure resistance and in ensuring link that the Ultra Deep can be used in saturation diving without the need for a helium escape valve.

At this point in the link collection the reality is I have everything I "need." In real life I have four watches so even in an imaginary collection I like to keep things really tight. I have my sport link watches covered and I link have really pushed myself to imagine how many times I would wear these two yellow gold "dress" watches something I have very little experience doing. Bottom line is I would be very excited to go into my watch box every morning and pick one of the four options above.