Seiko Cal. 5650 - 731

The Seiko 5650-731 represents an important milestone in Seiko's 1983 lineup. With its 21mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-f4ea1d04e413]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1983

Related Models

• Seiko 6179-252
• Seiko 3888-743
• Seiko 5256-228
• Seiko 6276-488
• Seiko 3879-284
• Seiko 5623-355
• Seiko 4539-745
• Seiko 6295-688
• Seiko 6343-165
• Seiko 5635-294
• Seiko 5672-287
• Seiko 4545-504