Seiko Cal. 3866 - 115

The Seiko 3866-115 represents an important milestone in Seiko's 1973 lineup. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-d066a4a945de]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1973

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