Seiko Cal. 6378 - 434

The Seiko 6378-434 represents an important milestone in Seiko's 1976 lineup. With its 20mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-d53ea05ce299]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1976

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