Seiko Cal. 5691 - 422

The Seiko 5691-422 represents an important milestone in Seiko's 1977 lineup. Powered by the 5691 caliber with 28j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-12786208f14f]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Silver

Jewels

28j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1977

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