Seiko Cal. 4540 - 900

The 4540-900 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-fe6edb07e5f5]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1976

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