Seiko Cal. 6643 - 980

The Seiko 6643-980 represents an important milestone in Seiko's 1972 lineup. It features a Green dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-bb4d859432c1]

Also known as: Goldfeather, Navigator

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1972

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