Seiko Cal. 4540 - 400

The Seiko 4540-400 represents an important milestone in Seiko's 1990 lineup. It features a Black dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-f59504a7844e]

Also known as: Flighty

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1990

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