Seiko Cal. 4430 - 437

The Seiko 4430-437 represents an important milestone in Seiko's 1971 lineup. With its 18mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-f478bb62dbd1]

Also known as: Samurai, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

24j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1971

Related Models

• Seiko 5286-855
• Seiko 6310-300
• Seiko 6617-473
• Seiko 5653-538
• Seiko 4544-601
• Seiko 6621-103
• Seiko 6378-290
• Seiko 5612-777
• Seiko 6265-394
• Seiko 6193-485
• Seiko 5234-146
• Seiko 6637-963