Seiko Cal. 4437 - 839

The 4437-839 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4437 caliber with 35j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-1aa3cc778af2]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1994

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