Seiko Cal. 5664 - 840

The 5664-840 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-6dde12dc8d44]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1965

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