Seiko Cal. 4540 - 548

The Seiko 4540-548 represents an important milestone in Seiko's 1971 lineup. With its 22mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-1ed5c9c1309c]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Champagne

Jewels

26j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1971

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