Seiko Cal. 6641 - 237

This Spring Drive model from 1975 features a 36mm Gold-Plated case. Powered by the 6641 caliber with 26j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-2a151bd55712]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Burgundy

Jewels

26j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1975

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