Seiko Cal. 4540 - 905

The 4540-905 is a sought-after Quartz piece from Seiko's golden era. It features a White dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-9472cb3f9a9e]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1975

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