Seiko Cal. 4540 - 131

The Seiko 4540-131 represents an important milestone in Seiko's 1983 lineup. It features a Champagne dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-b74181575be2]

Also known as: Monster, World Timer

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Champagne

Jewels

34j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1983

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