Seiko Cal. 5618 - 931

This Spring Drive model from 1984 features a 34mm Titanium case. With its 20mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-35d916227d05]

Also known as: Sumo, Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1984

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