Seiko Cal. 6633 - 991

The Seiko 6633-991 represents an important milestone in Seiko's 1975 lineup. It features a Navy dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-e0ad95f3bb7f]

Also known as: Rally, Flighty

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1975

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