Seiko Cal. 4427 - 172

This Spring Drive model from 1966 features a 34mm Titanium case. Powered by the 4427 caliber with 26j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-41df416f0c98]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1966

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