Seiko Cal. 5278 - 404

This Spring Drive model from 1978 features a 40mm PVD Black case. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-a8d13100a3c5]

Also known as: Rally, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1978

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