Seiko Cal. 3865 - 781

The Seiko 3865-781 represents an important milestone in Seiko's 1969 lineup. Powered by the 3865 caliber with 30j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-edc4f74dc7dd]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1969

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