Seiko Cal. 5278 - 396

The Seiko 5278-396 represents an important milestone in Seiko's 1976 lineup. Powered by the 5278 caliber with 17j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-369cd2ac1ca8]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1976

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