Seiko Cal. 6644 - 711

Released in 1983, the Cal. 6644 with design code 711 was part of Seiko's domestic market collection. It features a Black dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-108794cca3bb]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1983

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