Seiko Cal. 4539 - 784

The Seiko 4539-784 represents an important milestone in Seiko's 1973 lineup. With its 18mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-2ab69db9712d]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1973

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