Seiko Cal. 4563 - 242

The 4563-242 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-fb8f3fe7ab39]

Also known as: Tuna, Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1995

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