Seiko Cal. 5681 - 628

Released in 1976, the Cal. 5681 with design code 628 was part of Seiko's domestic market collection. With its 20mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-22fe2bd22fce]

Also known as: Tuna, Rally

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1976

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