Seiko Cal. 3884 - 421

This Spring Drive model from 1972 features a 37mm Stainless Steel case. With its 22mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-bb388fbab64e]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1972

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