Seiko Cal. 6378 - 717

This Spring Drive model from 1989 features a 42mm Hardlex-Coated Steel case. With its 21mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-2fbe67503ac3]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Silver

Jewels

22j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1989

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