Seiko Cal. 0720 - 731

The Seiko 0720-731 represents an important milestone in Seiko's 1965 lineup. It features a Silver dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-139412c717dc]

Also known as: Arnie

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

23j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1965

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