Seiko Cal. 4437 - 725

The Seiko 4437-725 represents an important milestone in Seiko's 1981 lineup. It features a Cream dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-9b4d18207e4b]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

33j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1981

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