Seiko Cal. 3866 - 587

The 3866-587 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3866 caliber with 34j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-8217db9f7d1b]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Champagne

Jewels

34j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1965

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