Seiko Cal. 5641 - 774

The 5641-774 is a sought-after Hand-Winding piece from Seiko's golden era. With its 18mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-eec3685ad1f2]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1984

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