Seiko Cal. 4520 - 661

The 4520-661 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-84f82bcc887b]

Also known as: Rally, Crown

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

24j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1978

Related Models

• Seiko 4515-609
• Seiko 6638-846
• Seiko 5643-295
• Seiko 6677-371
• Seiko 4412-421
• Seiko 7053-530
• Seiko 7163-382
• Seiko 4445-142
• Seiko 4428-262
• Seiko 7159-806
• Seiko 4431-556
• Seiko 6199-773