Seiko Cal. 6631 - 772

The Seiko 6631-772 represents an important milestone in Seiko's 1991 lineup. It features a Black dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-f0095d889004]

Also known as: Emperor, Flighty

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1991

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