Seiko Cal. 5688 - 642

The Seiko 5688-642 represents an important milestone in Seiko's 1976 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-c933a3cb36b7]

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1976

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