Seiko Cal. 5678 - 921

Released in 1986, the Cal. 5678 with design code 921 was part of Seiko's domestic market collection. With its 21mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-61ccd50de6f3]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1986

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