Seiko Cal. 6643 - 975

Released in 1988, the Cal. 6643 with design code 975 was part of Seiko's domestic market collection. It features a Silver dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-b99a97fe15cc]

Also known as: Turtle, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Silver

Jewels

34j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1988

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