Seiko Cal. 4540 - 270

The Seiko 4540-270 represents an important milestone in Seiko's 1972 lineup. Powered by the 4540 caliber with 26j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-3bdf0aef379b]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

30m

Dial Color

White

Jewels

26j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1972

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