Seiko Cal. 3864 - 556

Released in 1971, the Cal. 3864 with design code 556 was part of Seiko's domestic market collection. Powered by the 3864 caliber with 18j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-7efee3dc1d7b]

Also known as: Bullhead, Flighty

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Burgundy

Jewels

18j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1971

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