Seiko Cal. 4418 - 443

The Seiko 4418-443 represents an important milestone in Seiko's 1982 lineup. Powered by the 4418 caliber with 21j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-d24d2c2a0bd8]

Also known as: Sumo, Flighty

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1982

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