Seiko Cal. 5640 - 419

The 5640-419 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-a06998eb7f5c]

Also known as: Samurai

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1977

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