Seiko Cal. 4540 - 400

The Seiko 4540-400 represents an important milestone in Seiko's 1984 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-7379b7ac5405]

Also known as: Helmet, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

14.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1984

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