Seiko Cal. 3866 - 862

The Seiko 3866-862 represents an important milestone in Seiko's 1976 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-fb793ed85d54]

Also known as: Helmet, Silverwave

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1976

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