Seiko Cal. 4442 - 307

The Seiko 4442-307 represents an important milestone in Seiko's 1974 lineup. With its 18mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-dbee7634ae6f]

Also known as: Sumo, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1974

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