Seiko Cal. 4523 - 471

This Hand-Winding model from 1968 features a 42mm Hardlex-Coated Steel case. Powered by the 4523 caliber with 18j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-6afb11579f08]

Also known as: World Timer, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1968

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