Seiko Cal. 5641 - 352

Released in 1965, the Cal. 5641 with design code 352 was part of Seiko's domestic market collection. With its 19mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-ca4cb6bc0524]

Also known as: Monster, Helmet

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Navy

Jewels

32j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1965

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