Seiko Cal. 6378 - 873

The Seiko 6378-873 represents an important milestone in Seiko's 1969 lineup. Powered by the 6378 caliber with 24j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-82a99b3fe81e]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1969

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