Seiko Cal. 6640 - 882

Released in 1977, the Cal. 6640 with design code 882 was part of Seiko's domestic market collection. It features a Silver dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-db067705ecc8]

Also known as: Turtle, World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Silver

Jewels

30j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1977

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