Seiko Cal. 3866 - 866

The 3866-866 is a sought-after Spring Drive piece from Seiko's golden era. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-1a445ccaa303]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1983

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