Seiko Cal. 5637 - 409

The 5637-409 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Champagne dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-146cd0341054]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Champagne

Jewels

27j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1983

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