Seiko Cal. 3837 - 645

This Spring Drive model from 1975 features a 44mm Two-Tone case. With its 19mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-f95d83a840d1]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1975

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