Seiko Cal. 4423 - 399

Released in 1967, the Cal. 4423 with design code 399 was part of Seiko's domestic market collection. With its 20mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-9bbe822da723]

Also known as: Sumo, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

19j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1967

Related Models

• Seiko 5612-683
• Seiko 0727-897
• Seiko 6626-458
• Seiko 5651-869
• Seiko 6673-831
• Seiko 0798-737
• Seiko 7199-696
• Seiko 6641-542
• Seiko 4568-187
• Seiko 6333-217
• Seiko 7096-522
• Seiko 7182-903