Seiko Cal. 4540 - 959

The Seiko 4540-959 represents an important milestone in Seiko's 1968 lineup. With its 21mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-0278f03572c7]

Also known as: Sumo, Shogun

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

34j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1968

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