Seiko Cal. 5643 - 241

This Spring Drive model from 1971 features a 41mm Two-Tone case. With its 18mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-a4c913bb6ad0]

Also known as: Goldfeather, World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1971

Related Models

• Seiko 5628-647
• Seiko 7173-140
• Seiko 6139-661
• Seiko 4526-931
• Seiko 4526-451
• Seiko 5252-525
• Seiko 6111-112
• Seiko 6127-828
• Seiko 7142-695
• Seiko 7162-955
• Seiko 7137-593
• Seiko 0713-405