Seiko Cal. 4520 - 960

The Seiko 4520-960 represents an important milestone in Seiko's 1979 lineup. Powered by the 4520 caliber with 30j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-577703cfcfeb]

Also known as: Sumo, Helmet

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

36mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1979

Related Models

• Seiko 5622-311
• Seiko 7096-783
• Seiko 4542-604
• Seiko 5254-572
• Seiko 6352-534
• Seiko 6181-970
• Seiko 3820-218
• Seiko 6367-589
• Seiko 5287-969
• Seiko 6631-426
• Seiko 6614-583
• Seiko 5251-527