Seiko Cal. 4423 - 190

The Seiko 4423-190 represents an important milestone in Seiko's 1983 lineup. It features a Navy dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-72c819b359de]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

34j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1983

Related Models

• Seiko 0789-214
• Seiko 5298-766
• Seiko 6613-578
• Seiko 4435-882
• Seiko 5214-505
• Seiko 6320-798
• Seiko 6127-760
• Seiko 6359-847
• Seiko 5655-572
• Seiko 7184-203
• Seiko 3852-508
• Seiko 3872-966