Seiko Cal. 4427 - 283

This Spring Drive model from 1976 features a 35mm Titanium case. With its 18mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-269236c0dc5f]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Navy

Jewels

27j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1976

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