Seiko Cal. 4437 - 640

The Seiko 4437-640 represents an important milestone in Seiko's 1979 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-de34d8583b65]

Also known as: Helmet, Emperor

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

45mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Burgundy

Jewels

25j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1979

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