Seiko Cal. 5633 - 373

The Seiko 5633-373 represents an important milestone in Seiko's 1971 lineup. Powered by the 5633 caliber with 25j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-646b04ad4d7a]

Also known as: Samurai

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

25j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1971

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