Seiko Cal. 4556 - 313

This Spring Drive model from 1967 features a 40mm Hardlex-Coated Steel case. Powered by the 4556 caliber with 31j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-110f84b0b80a]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1967

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