Seiko Cal. 5633 - 918

This Spring Drive model from 1972 features a 34mm PVD Black case. Powered by the 5633 caliber with 24j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-d7e231ad6ac9]

Also known as: Samurai, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1972

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