Seiko Cal. 4433 - 631

The Seiko 4433-631 represents an important milestone in Seiko's 1969 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-689ac9e74f3e]

Also known as: Shogun, Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1969

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