Seiko Cal. 6631 - 672

The Seiko 6631-672 represents an important milestone in Seiko's 1990 lineup. It features a Navy dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-c2bc15948f35]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

30j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1990

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