Seiko Cal. 5644 - 363

The 5644-363 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-48a791a7dd0f]

Also known as: Shogun, Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

33j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1976

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