Seiko Cal. 6681 - 765

This Spring Drive model from 1974 features a 39mm Two-Tone case. Powered by the 6681 caliber with 20j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-b28c08838662]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Cream

Jewels

20j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1974

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