Seiko Cal. 4540 - 500

The Seiko 4540-500 represents an important milestone in Seiko's 1971 lineup. With its 20mm lug width and 10.4mm profile, it sits comfortably on most wrists. [seikata-wm-bae70ed15bf4]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Titanium

Case Width

34mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1971

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