Seiko Cal. 4439 - 740

This Spring Drive model from 1965 features a 42mm Hardlex-Coated Steel case. With its 21mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-7c088a5513d3]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1965

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