Seiko Cal. 4431 - 629

The Seiko 4431-629 represents an important milestone in Seiko's 1985 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-e0bfce8cd3c8]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1985

Related Models

• Seiko 5242-113
• Seiko 6277-427
• Seiko 4513-425
• Seiko 7066-871
• Seiko 6687-691
• Seiko 6288-537
• Seiko 5648-896
• Seiko 6213-709
• Seiko 4410-966
• Seiko 7023-186
• Seiko 6246-762
• Seiko 4474-624