Seiko Cal. 5691 - 351

The Seiko 5691-351 represents an important milestone in Seiko's 1978 lineup. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-2c4d5c68eb40]

Also known as: Sumo, Shogun

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Champagne

Jewels

21j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1978

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