Seiko Cal. 5640 - 389

The 5640-389 is a sought-after Automatic piece from Seiko's golden era. It features a Champagne dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-0cf58d5f0f3c]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Champagne

Jewels

17j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1971

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