Seiko Cal. 3831 - 623

The 3831-623 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3831 caliber with 34j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-03dfac571ab5]

Also known as: Monster, Arnie

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

130m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1967

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