Seiko Cal. 5678 - 521

The 5678-521 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-9172d6a88d79]

Also known as: Bellmatic, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1981

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