Seiko Cal. 6351 - 559

This Spring Drive model from 1985 features a 40mm Titanium case. With its 22mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-58db116c99b2]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1985

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