Seiko Cal. 3864 - 186

This Spring Drive model from 1977 features a 35mm Titanium case. Powered by the 3864 caliber with 27j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-7c8b30bd86d3]

Also known as: Pogue, Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Champagne

Jewels

27j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1977

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