Seiko Cal. 0720 - 746

The Seiko 0720-746 represents an important milestone in Seiko's 1972 lineup. It features a Black dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-c1798832f11f]

Also known as: World Timer, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1972

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