Seiko Cal. 4439 - 291

Released in 1966, the Cal. 4439 with design code 291 was part of Seiko's domestic market collection. With its 20mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-ce65ef04747d]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Champagne

Jewels

32j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1966

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