The display back on the AT and the drilled lugs are probably the first you notice from this perspective trying to compare the watch backs from a closer view. You can also see the nice big and tall crown of the AT that makes unscrewing and closing of the crown a real pleasure. Congratulations to Omega for the decision to make a nice tall crown which does not bite the back of the wrist because the display back will make sure the watch sits high enough on the wrist. You can also see that both watches feature solid links and solid end links.