Seiko Cal. 4420 - 237

This Spring Drive model from 1970 features a 45mm Titanium case. With its 19mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-15fc547363dd]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

34j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1970

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