Seiko Cal. 5664 - 766

The Seiko 5664-766 represents an important milestone in Seiko's 1973 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-2d119d6cf39f]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

27j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1973

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