Seiko Cal. 4538 - 985

The 4538-985 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4538 caliber with 22j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-456f3adc8530]

Also known as: Sumo, Silverwave

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1971

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