Seiko Cal. 6643 - 766

The 6643-766 is a sought-after Quartz piece from Seiko's golden era. It features a Cream dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-c70306c56cfd]

Also known as: Pogue, Silverwave

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

33j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1970

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