Seiko Cal. 4540 - 102

The 4540-102 is a sought-after Spring Drive piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-4da5c99442e4]

Also known as: Rally, World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1983

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