Seiko Cal. 3861 - 270

The Seiko 3861-270 represents an important milestone in Seiko's 1978 lineup. Powered by the 3861 caliber with 20j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-e6f22db2bb06]

Also known as: Bullhead, World Timer

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1978

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