Seiko Cal. 6644 - 666

The 6644-666 is a sought-after Spring Drive piece from Seiko's golden era. It features a Champagne dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-2b7acd9a1af8]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Champagne

Jewels

17j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1996

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