Seiko Cal. 5691 - 423

The 5691-423 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5691 caliber with 27j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-58d3b4e4d926]

Also known as: Flighty

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1970

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