Seiko Cal. 4439 - 725

Released in 1979, the Cal. 4439 with design code 725 was part of Seiko's domestic market collection. It features a Black dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-d5031de915ea]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1979

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