Seiko Cal. 4558 - 540

The Seiko 4558-540 represents an important milestone in Seiko's 1978 lineup. Powered by the 4558 caliber with 26j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-555b21700cbb]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

26j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1978

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