Found in the Hamilton Pan Europ limited edition watch, this caliber H31 is a variation of the ETA/Valjoux 7750. This Swiss made automatic movement has 27 jewels and an upgraded power reserve of 60 hours.
H35756735
Latest
Part of the 
network of watch sites
network of watch sites
Recent Comments
Looking good! Thanks for sharing your watch with the community. If anyone wants to purchase…
My new Militado ML-05 featuring a VH-31 caliber
Some "Hanoi Special" Seiko 5/Rado Silver Star used Citizen's 8200 for some reason. They even…
I think Sunon actually use Seiko's parts, the SL28's date wheel was from Seiko's PC32/PC33.
From what I can see, the coil is damaged. I put a new battery but…
I have a Bulova 97B110 in need of repair. It was my Dad's and he…
Thank you for that. Keep checking eBay. Since Bulova is not repairing them, as they…