Seiko Cal. 4531 - 866

The Seiko 4531-866 represents an important milestone in Seiko's 1984 lineup. Powered by the 4531 caliber with 19j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-05fc03ab1ce9]

Also known as: World Timer, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1984

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