Seiko Cal. 6333 - 421

The Seiko 6333-421 represents an important milestone in Seiko's 1977 lineup. Powered by the 6333 caliber with 32j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-2a3992cd7cd4]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

44mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1977

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