Seiko Cal. 4423 - 307

The Seiko 4423-307 represents an important milestone in Seiko's 1997 lineup. With its 20mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-74527c50a6ff]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Cream

Jewels

22j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1997

Related Models

• Seiko 6677-822
• Seiko 5263-261
• Seiko 7098-171
• Seiko 6379-578
• Seiko 6638-374
• Seiko 6657-276
• Seiko 6137-509
• Seiko 6234-546
• Seiko 5687-138
• Seiko 4431-308
• Seiko 6122-931
• Seiko 3814-723