Seiko Cal. 6378 - 297

This Spring Drive model from 1977 features a 43mm Titanium case. With its 19mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-b9f6ceadfd33]

Also known as: Sumo, Flighty

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

13.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1977

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