The Delta Type features a 316L stainless steel case measuring 39mm in diameter, 11mm thick, and 47mm lug-to-lug. While the case silhouette remains classic and simple, a closer look reveals some nice touches, including polished facets on the inner lugs and a nice recessed line engraving on the case sides. While the dimensions seem very classic on paper, the Delta Type wore a bit larger than expected, most likely due to the lug proportions and the polished slab sides of the case.
But it’s still a comfortable watch, and thanks to its 100 meters of water resistance and rubber strap, it is a good option for those looking for the most comprehensive GMT complication while being a worry-free everyday watch. To be completely honest, the rubber strap, while versatile, feels like a bit of a clunky afterthought—the lack of taper and a generic polished buckle that doesn’t quite match the case’s execution are the big culprits here. But thankfully, it’s the one part of the watch that you can change, and I’d certainly swap this for any of my other 20mm straps immediately.