Seiko Cal. 6637 - 683

The Seiko 6637-683 represents an important milestone in Seiko's 1984 lineup. It features a Green dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-e39db98a7118]

Also known as: Goldfeather, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1984

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