Seiko Cal. 5691 - 677

The Seiko 5691-677 represents an important milestone in Seiko's 1971 lineup. Powered by the 5691 caliber with 36j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-a31b36f089d0]

Also known as: Goldfeather

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1971

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