Seiko Cal. 4439 - 165

The 4439-165 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4439 caliber with 18j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-c5b24f6e7299]

Also known as: Tuna, Bullhead

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1965

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