Seiko Cal. 5681 - 722

The Seiko 5681-722 represents an important milestone in Seiko's 1972 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-c9d3bdd61ce2]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1972

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