Seiko Cal. 4439 - 288

This Quartz model from 1979 features a 36mm Titanium case. Powered by the 4439 caliber with 29j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-d9ee23dc10e4]

Also known as: Helmet, UFO

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

White

Jewels

29j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1979

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