Seiko Cal. 3851 - 649

This Spring Drive model from 1966 features a 44mm PVD Black case. Powered by the 3851 caliber with 30j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-4ffcf134c84e]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

30j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1966

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