Seiko Cal. 6378 - 673

The Seiko 6378-673 represents an important milestone in Seiko's 1976 lineup. Powered by the 6378 caliber with 35j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-a71514bdfae7]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1976

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