Seiko Cal. 3866 - 856

Released in 1994, the Cal. 3866 with design code 856 was part of Seiko's domestic market collection. Powered by the 3866 caliber with 23j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-f4badd85bcfd]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1994

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