Seiko Cal. 3851 - 318

This Spring Drive model from 1999 features a 34mm PVD Black case. Powered by the 3851 caliber with 22j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-156e2b24b6fa]

Also known as: Monster, UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

11.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1999

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