Seiko Cal. 6633 - 403

The Seiko 6633-403 represents an important milestone in Seiko's 1988 lineup. Powered by the 6633 caliber with 22j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-8612f0cd5ae5]

Also known as: Tuna, Bullhead

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1988

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