Seiko Cal. 5278 - 564

The Seiko 5278-564 represents an important milestone in Seiko's 1974 lineup. With its 19mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-67ac4d64cf41]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1974

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