Seiko Cal. 6256 - 638

The Seiko 6256-638 represents an important milestone in Seiko's 1987 lineup. Powered by the 6256 caliber with 25j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-0c2af9f99aa8]

Also known as: Shogun, Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1987

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