The originals were quite chunky, though, so the wearing experience is now much better balanced at only 11.9mm, including a sapphire caseback. If you look at the side profile of a vintage Sky Chief, the new model’s brushed-and-polished stainless steel case will look somewhat similar in proportions. The super-steep bezel and sapphire take up much of the space (as they do on the original), with a vertical ring where the bezel attaches to the case (shrunken to reduce thickness), the midcase, and a now-flatter caseback ring. The crown looks pretty big and chunky, just what you want on a vintage-inspired watch. All this, plus 100m of water resistance, and you’ve got a nice case design. Inside is a COSC-certified ETA 2894 automatic movement with a 42-hour power reserve.