Seiko Cal. 5644 - 500

The 5644-500 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-89b1338a94ea]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

30j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1975

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