Seiko Cal. 6391 - 641

This Spring Drive model from 1993 features a 35mm Stainless Steel case. Powered by the 6391 caliber with 27j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-3431b06c0082]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Cream

Jewels

27j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1993

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