Sheffield Watches
The 1A 40 has always been core to the Sheffield story. It was the first true update of my original Sheffield Diver, now refined with a steel coin-edge bezel that is even truer to the original.
More than 50 years after I received my first Sheffield in 1970, this watch represents a dream turned reality. Incredible specifications and build quality come together in a distinctive design that still stands out today while respecting the intent of the original.
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Built from 316L stainless steel, the 1A 40 features a 40mm case, 48mm lug-to-lug, drilled 20mm lugs, and a 13mm profile. It is powered by the reliable NH35A automatic movement with 24 jewels.
A sapphire crystal, screw-down crown, Swiss and Japanese lume, and 200 meters of water resistance provide serious everyday performance. The steel bezel features an aluminum insert with luminous indices, while a 260mm FKM rubber Tropic strap completes the classic diver-inspired build.
316L Stainless Steel
Case Diameter: 40mm
Lug to Lug: 48mm
Lug Width (Drilled): 20mm
Total Thickness: 13mm
NH35 automatic with date
-20 to +40 seconds a day
24 jewels
Hand-wind and hacking features
Steel
Aluminum Insert
Black with white Swiss Lume indices
Sapphire with anti-glare coating
Hands: Swiss
Dial: Swiss
Black with Mint Indices
Numbers and Hands: Swiss Lume
200 Meters
Screw Down
"Finally, a watch that doesn't make you choose between quality and your budget"
