Seiko Cal. 4418 - 442

The Seiko 4418-442 represents an important milestone in Seiko's 1968 lineup. Powered by the 4418 caliber with 33j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-4844a65ab6e3]

Also known as: Sumo, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1968

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