Seiko Cal. 3857 - 515

This Spring Drive model from 1966 features a 39mm Gold-Plated case. Powered by the 3857 caliber with 33j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-896652f2960d]

Also known as: Sea Horse, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

33j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1966

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