Seiko Cal. 4433 - 637

The Seiko 4433-637 represents an important milestone in Seiko's 1971 lineup. It features a Cream dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-5c6298ee4604]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

24j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1971

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