Seiko Cal. 7085 - 631

Seiko 7085-631

The 7085-631 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7085 caliber with 30j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-c69ea9142a80]

Also known as: Sumo, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
11.1mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
90m
Dial Color
White
Jewels
30j
Frequency
28,800 bph
Power Reserve
65 hours
Year
1966

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