Seiko Cal. 6647 - 454

Released in 1967, the Cal. 6647 with design code 454 was part of Seiko's domestic market collection. It features a Green dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-08ce6a3621e8]

Also known as: Monster, Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1967

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