Seiko Cal. 6631 - 683

The Seiko 6631-683 represents an important milestone in Seiko's 1988 lineup. It features a Navy dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-85652e23f65c]

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1988

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