Seiko Cal. 6643 - 671

The 6643-671 is a sought-after Kinetic piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-082b158ec26f]

Also known as: Goldfeather

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1976

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