Seiko Cal. 4540 - 497

Released in 1979, the Cal. 4540 with design code 497 was part of Seiko's domestic market collection. It features a Cream dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-14127f4326be]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

25j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1979

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