Seiko Cal. 4521 - 679

The 4521-679 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4521 caliber with 35j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-35d7abba84e7]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

35j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1965

Related Models

• Seiko 0721-879
• Seiko 3846-677
• Seiko 6121-329
• Seiko 4441-767
• Seiko 5644-250
• Seiko 5690-750
• Seiko 6282-989
• Seiko 4480-298
• Seiko 5214-751
• Seiko 4479-240
• Seiko 6397-685
• Seiko 4590-457