Seiko Cal. 4418 - 656

The Seiko 4418-656 represents an important milestone in Seiko's 1970 lineup. Powered by the 4418 caliber with 20j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-dc8e192c3d73]

Also known as: Bullhead, Silverwave

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1970

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