Seiko Cal. 0720 - 311

The Seiko 0720-311 represents an important milestone in Seiko's 1981 lineup. It features a Navy dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-6dc6ab45014c]

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1981

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