Seiko Cal. 4540 - 623

The 4540-623 is a sought-after Spring Drive piece from Seiko's golden era. It features a Cream dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-ab1e0b8c7180]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

14.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Cream

Jewels

24j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1987

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