Seiko Cal. 3890 - 644

This Automatic model from 1970 features a 36mm Hardlex-Coated Steel case. With its 18mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-d878608f5a71]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1970

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