Seiko Cal. 6221 - 636

The Seiko 6221-636 represents an important milestone in Seiko's 1969 lineup. With its 19mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-40d6919d130c]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1969

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