Seiko Cal. 3857 - 660

The Seiko 3857-660 represents an important milestone in Seiko's 1974 lineup. Powered by the 3857 caliber with 31j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-6f42bb47bbed]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

31j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1974

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