Seiko Cal. 3840 - 379

The Seiko 3840-379 represents an important milestone in Seiko's 1971 lineup. Powered by the 3840 caliber with 26j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-d6287df83919]

Also known as: Sea Horse, Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1971

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