Seiko Cal. 5678 - 357

The Seiko 5678-357 represents an important milestone in Seiko's 1966 lineup. Powered by the 5678 caliber with 28j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-0251cb71d274]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1966

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