Seiko Cal. 4560 - 731

The 4560-731 is a sought-after Solar piece from Seiko's golden era. Powered by the 4560 caliber with 17j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-86d69ac117ca]

Also known as: Sumo, Bellmatic

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

17j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1991

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