Seiko Cal. 3815 - 860

The Seiko 3815-860 represents an important milestone in Seiko's 1969 lineup. Powered by the 3815 caliber with 20j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-22603ac389bb]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1969

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