Seiko Cal. 4490 - 525

The 4490-525 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4490 caliber with 24j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-32bafc70963f]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1977

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