Seiko Cal. 6378 - 634

The Seiko 6378-634 represents an important milestone in Seiko's 1965 lineup. With its 19mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-1e2226aa28ce]

Also known as: Bullhead, Goldfeather

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1965

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