Seiko Cal. 4521 - 922

The 4521-922 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-7bdf9bcbcb6d]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1976

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