Seiko Cal. 5678 - 635

The Seiko 5678-635 represents an important milestone in Seiko's 1997 lineup. With its 22mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-e96fd50294d9]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

39mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Burgundy

Jewels

27j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1997

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