Seiko Cal. 4536 - 375

This Spring Drive model from 1987 features a 40mm Stainless Steel case. With its 19mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-ba7069eaea8c]

Also known as: Tuna, World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1987

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