Seiko Cal. 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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