Seiko Cal. 4539 - 639

The Seiko 4539-639 represents an important milestone in Seiko's 1980 lineup. Powered by the 4539 caliber with 27j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-5753c72c6501]

Also known as: Tuna, Arnie

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1980

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