Seiko Cal. 6664 - 837

The 6664-837 is a sought-after Spring Drive piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-3b9e48960a86]

Also known as: World Timer, Crown

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1977

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