Seiko Cal. 4526 - 731

The 4526-731 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4526 caliber with 32j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-a98b2e92aede]

Also known as: Sumo, Bullhead

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1987

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