Seiko Cal. 5612 - 731

The 5612-731 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5612 caliber with 36j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-552ec69089c2]

Also known as: Bullhead, Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1994

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