Seiko Cal. 4420 - 138

This Spring Drive model from 1970 features a 40mm Two-Tone case. With its 19mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-023b80f64228]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1970

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