Seiko Cal. 4418 - 185

This Spring Drive model from 1979 features a 43mm Two-Tone case. Powered by the 4418 caliber with 28j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-fb76dda4c956]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

28j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1979

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