Seiko Cal. 6631 - 613

The Seiko 6631-613 represents an important milestone in Seiko's 1997 lineup. It features a Navy dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-8c8601e1a773]

Also known as: Bellmatic

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

14.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

32j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1997

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