Tool Watch Classics
Before watches became status objects, they were instruments. The dive watch existed to track no-decompression limits. The pilot watch existed to read in a cockpit. The field watch existed to survive mud. These references still carry that original purpose in their design. Buy them because the function shaped the form, not the other way around.
Each reference on this list was designed around a constraint. The Submariner around depth. The Fifty Fathoms around decompression. The Mark XX around legibility at altitude. The constraint is what makes the design honest.
8 of 8 in this collection
41mmRolex Cal. 3235 -- in-house automatic, 28,800bph, 70h PR, 31j; Chronergy escapement, paramagnetic Parachrom hairspring, Superlative Chronometer2020–present
42mmBlancpain Cal. 1315 -- in-house automatic, 28,800bph, 120h (5-day) PR, 35j; three barrels, silicon anti-shock spring, mono-directional winding rotor2007–present
40mmIWC Cal. 32111 -- Sellita SW300-1 base, in-house finished, 28,800bph, 42h PR, 25j; IWC decorated and certified; used in Mark XX and Ingenieur 402022–present
43mmIWC Cal. 82100 -- in-house automatic, 28,800bph, 60h PR, 30j; Pellaton winding system, soft iron anti-magnetic cage; IWC Big Pilot workhorse caliber2021–present
38mmHamilton Cal. H-50 -- ETA 2801-2 base, manual-wind, 21,600bph, 80h PR, 17j; used in Khaki Field Mechanical; Hamilton-modified for increased power reserve2018–present
36mmHamilton Cal. H-50 -- ETA 2801-2 base, manual-wind, 21,600bph, 80h PR, 17j; used in Khaki Field Mechanical; Hamilton-modified for increased power reserve2016–present
38mmZenith Cal. 3019 PHC -- El Primero manual-wind column-wheel chronograph, 36,000bph, 50h PR, 31j; 1/10s chronograph precision; launched 19691969–1971
39mmTudor MT5400 -- in-house automatic, 28,800bph, 70h PR, 26j; METAS-certified, free-sprung balance, silicon hairspring2022–present
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