Seiko Cal. 4521 - 604

This Hand-Winding model from 1985 features a 43mm Titanium case. With its 18mm lug width and 12.4mm profile, it sits comfortably on most wrists. [seikata-wm-c96752d8aa33]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

12.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

20j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1985

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