Seiko Cal. 3866 - 730

The 3866-730 is a sought-after Kinetic piece from Seiko's golden era. With its 21mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-bd38f8cc6fe3]

Also known as: Bullhead, Helmet

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

34j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1994

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