Seiko Cal. 4543 - 643

The Seiko 4543-643 represents an important milestone in Seiko's 1970 lineup. With its 22mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-2de6fca43b81]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

26j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1970

Related Models

• Seiko 4415-783
• Seiko 3822-958
• Seiko 4567-453
• Seiko 4433-795
• Seiko 0712-412
• Seiko 6375-585
• Seiko 4541-262
• Seiko 7023-485
• Seiko 7015-657
• Seiko 4450-138
• Seiko 6241-569
• Seiko 7142-794