Seiko Cal. 4539 - 680

The Seiko 4539-680 represents an important milestone in Seiko's 1979 lineup. Powered by the 4539 caliber with 18j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-00e69b54b900]

Also known as: Bellmatic, Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1979

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