Seiko Cal. 3866 - 917

The 3866-917 is a sought-after Automatic piece from Seiko's golden era. With its 21mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-4ca5eab0c25b]

Also known as: Sumo, Sea Horse

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1973

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