Seiko Cal. 3866 - 123

The Seiko 3866-123 represents an important milestone in Seiko's 1967 lineup. Powered by the 3866 caliber with 29j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-6cfa25907f05]

Also known as: Pogue, Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

White

Jewels

29j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1967

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