Hamilton caliber H-31
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H-31 description
The Hamilton H-31 is based on the Valjoux 7753. The H-21 is similar though based on the 7750. These movements most notable change compared to the standard version is the 60 hour power reserve.
The following elements have been modified:
- The entire kinematic chain has been refined, from the barrel to the escapement
- The escapement regulator has been suppressed, facilitating optimal reliability and precision
- The main spring has been improved to increase a typical power reserve of 60 hours.
- The mono-block rotor is distinctively skeletonized with an “H” shape and aviation-inspired cut-outs, a signature of individualization.
Other calibers that are based on the Hamilton H-31:
All watches using the Hamilton H-31 movement:
H35756735
Hamilton Pan Europ Auto Chrono
H35756755
Hamilton Pan Europ Auto Chrono
H60416533
Hamilton Khaki Pioneer Auto Chrono
H60416583
Hamilton Khaki Pioneer Auto Chrono
H64666135
Hamilton Khaki Pilot Auto Chrono
H64666155
Hamilton Khaki Pilot Auto Chrono
H64666555
Hamilton Khaki Pilot Auto Chrono
H64666735
Hamilton Khaki Pilot Auto Chrono
H78716333
Hamilton Khaki Navy Sub Auto Chrono
H78716983
Hamilton Khaki Navy Sub Auto Chrono
H76416135
Hamilton Khaki Pilot Pioneer Auto Chrono Black / Bracelet
H76456435
Hamilton Khaki Pilot Pioneer Auto Chrono
H76416735
Hamilton Khaki Pilot Pioneer Auto Chrono
H76456955
Hamilton Khaki Pilot Pioneer Auto Chrono
H76416755
Hamilton Khaki Pilot Pioneer Auto Chrono
H76416155
Hamilton Khaki Pilot Pioneer Auto Chrono
H76786733
Hamilton Khaki Pilot Takeoff Auto Chrono
H38716731
Hamilton Intra-Matic 68 Auto Chrono Stainless Steel / Black / Strap
H38416541
Hamilton Intra-Matic 68 Auto Chrono Stainless Steel / Blue / Strap
H38416711
Hamilton Intra-Matic 68 Auto Chrono Stainless Steel / Silver / Strap
H38416560
Hamilton Intra-Matic 68 Auto Chrono Stainless Steel / Green / Strap
H38416160
Hamilton Intra-Matic 68 Auto Chrono Stainless Steel / Green / Mesh
H38416141
Hamilton Intra-Matic 68 Auto Chrono Stainless Steel / Blue / Mesh
H38416111
Hamilton Intra-Matic 68 Auto Chrono Stainless Steel / Silver / Mesh
H76776733
Hamilton Khaki Pilot Takeoff Auto Chrono Limited Edition
H38426820
Hamilton Intra-Matic 68 Auto Chrono Janie Briant Today
H38436830
Hamilton Intra-Matic 68 Auto Chrono Janie Briant Tomorrow
H36616640
Hamilton Jazzmaster Performer Auto Chrono 42 Stainless Steel / Blue
H36606730
Hamilton Jazzmaster Performer Auto Chrono 42 Stainless Steel / Black
H36606130
Hamilton Jazzmaster Performer Auto Chrono 42 Stainless Steel / Black / Bracelet
H36626710
Hamilton Jazzmaster Performer Auto Chrono 42 Rose Gold / White
H51616731
Hamilton Chrono-Matic 50 Auto Chrono Limited Edition
H36656140
Hamilton Jazzmaster Performer Auto Chrono 42 Stainless Steel / Blue / Bracelet