Seiko Cal. 5256 - 187

This Spring Drive model from 1977 features a 42mm Hardlex-Coated Steel case. Powered by the 5256 caliber with 23j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-fbfe3570ea9a]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1977

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