Seiko Cal. 4539 - 550

The Seiko 4539-550 represents an important milestone in Seiko's 1994 lineup. Powered by the 4539 caliber with 32j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-4ab1c244e57d]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Champagne

Jewels

32j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1994

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