Seiko Cal. 4536 - 522

The Seiko 4536-522 represents an important milestone in Seiko's 1966 lineup. Powered by the 4536 caliber with 20j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-bdfe77ffab3c]

Also known as: Sumo, Arnie

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1966

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