Seiko Cal. 3866 - 214

The 3866-214 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3866 caliber with 36j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-0d6b88fee38c]

Also known as: Sumo, Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1985

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