Seiko Cal. 5278 - 551

This Spring Drive model from 1966 features a 42mm Hardlex-Coated Steel case. With its 20mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-a9ea6330c188]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1966

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