Seiko Cal. 4454 - 656

The Seiko 4454-656 represents an important milestone in Seiko's 1973 lineup. Powered by the 4454 caliber with 31j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-11683faabbd5]

Also known as: Bullhead, Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

12.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

31j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1973

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