Seiko Cal. 6640 - 195

Released in 1970, the Cal. 6640 with design code 195 was part of Seiko's domestic market collection. It features a Cream dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-b77ec5f554ad]

Also known as: Turtle, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

35j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1970

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