Seiko Cal. 6691 - 918

This Spring Drive model from 1988 features a 40mm Gold-Plated case. Powered by the 6691 caliber with 34j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-f6aeb1643fb5]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1988

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