Seiko Cal. 7083 - 631

Seiko 7083-631

The Seiko 7083-631 represents an important milestone in Seiko's 1978 lineup. Powered by the 7083 caliber with 33j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-ac5aa104e3dd]

Also known as: Sumo, Shogun

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
39mm
Case Thickness
14.0mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
White
Jewels
33j
Frequency
36,000 bph
Power Reserve
51 hours
Year
1978

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