Seiko Cal. 3865 - 674

The Seiko 3865-674 represents an important milestone in Seiko's 1970 lineup. Powered by the 3865 caliber with 20j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-555457c4c83b]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1970

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