Seiko Cal. 6633 - 312

The Seiko 6633-312 represents an important milestone in Seiko's 1990 lineup. Powered by the 6633 caliber with 33j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-eb91e2e6ab56]

Also known as: UFO, Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1990

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