Seiko Cal. 4539 - 966

The Seiko 4539-966 represents an important milestone in Seiko's 1984 lineup. Powered by the 4539 caliber with 24j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-3b05a81aa084]

Also known as: Sumo, World Timer

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1984

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