Seiko Cal. 5678 - 377

The Seiko 5678-377 represents an important milestone in Seiko's 1966 lineup. Powered by the 5678 caliber with 22j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-21b1bc4ec967]

Also known as: Sumo, Rally

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1966

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