Seiko Cal. 4478 - 586

The 4478-586 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4478 caliber with 26j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-579769343be3]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1993

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