Seiko Cal. 6378 - 394

This Spring Drive model from 1971 features a 37mm Stainless Steel case. Powered by the 6378 caliber with 33j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-2954eb7e036d]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Burgundy

Jewels

33j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1971

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