Seiko Cal. 3866 - 631

The 3866-631 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3866 caliber with 29j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-178608f410a9]

Also known as: Samurai

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

29j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1991

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