Seiko Cal. 6639 - 817

The 6639-817 is a sought-after Quartz piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-73012f4b129e]

Also known as: Crown, Baby Tuna

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1972

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