Seiko Cal. 4520 - 939

The 4520-939 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4520 caliber with 29j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-9f99569359c1]

Also known as: Sumo, Bellmatic

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Champagne

Jewels

29j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1981

Related Models

• Seiko 7063-511
• Seiko 4426-549
• Seiko 3851-809
• Seiko 7086-594
• Seiko 4582-682
• Seiko 7183-263
• Seiko 4588-798
• Seiko 5279-182
• Seiko 3821-664
• Seiko 4511-336
• Seiko 6659-287
• Seiko 7062-609