Seiko Cal. 4418 - 138

This Spring Drive model from 1978 features a 38mm PVD Black case. Powered by the 4418 caliber with 36j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-9a98bd34da2b]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1978

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