Seiko Cal. 5641 - 681

The 5641-681 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-d73eb38bee27]

Also known as: Flighty

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1975

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