Seiko Cal. 6639 - 656

The 6639-656 is a sought-after Kinetic piece from Seiko's golden era. It features a Burgundy dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-d7dfb67fafd9]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Burgundy

Jewels

35j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1999

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