Seiko Cal. 5630 - 680

The Seiko 5630-680 represents an important milestone in Seiko's 1985 lineup. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-917ae247e4e9]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

43mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1985

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