Seiko Cal. 6631 - 954

The Seiko 6631-954 represents an important milestone in Seiko's 1984 lineup. It features a Black dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-d71cccf653a6]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1984

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