Seiko Cal. 4561 - 331

This Quartz model from 1968 features a 42mm Hardlex-Coated Steel case. Powered by the 4561 caliber with 23j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-02eebcb17d62]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1968

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