Seiko Cal. 4538 - 540

The Seiko 4538-540 represents an important milestone in Seiko's 1997 lineup. It features a Green dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-654e5daaa3db]

Also known as: Sumo, World Timer

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1997

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