Seiko Cal. 0720 - 724

The Seiko 0720-724 represents an important milestone in Seiko's 1977 lineup. It features a Black dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-c21bf79ec3d4]

Also known as: Monster, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1977

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