Seiko Cal. 5641 - 811

The 5641-811 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5641 caliber with 35j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-86a4efd08c9e]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Cream

Jewels

35j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1985

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