Seiko Cal. 4520 - 648

Released in 1989, the Cal. 4520 with design code 648 was part of Seiko's domestic market collection. Powered by the 4520 caliber with 24j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-b35bee8bf071]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1989

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