Seiko Cal. 3844 - 688

This Spring Drive model from 1968 features a 39mm Two-Tone case. With its 20mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-f3e81a986005]

Also known as: Sumo, Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1968

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