Seiko Cal. 6681 - 677

The Seiko 6681-677 represents an important milestone in Seiko's 1976 lineup. Powered by the 6681 caliber with 25j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-bff21ad0c6b7]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1976

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