Seiko Cal. 5637 - 204

The 5637-204 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 8.4mm profile, it sits comfortably on most wrists. [seikata-wm-3680e39f8a8a]

Also known as: Bullhead, Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

8.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1967

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