Seiko Cal. 5644 - 372

The 5644-372 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-0a5358a2d405]

Also known as: Sumo, Panda

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1976

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