Seiko Cal. 6640 - 271

The 6640-271 is a sought-after Quartz piece from Seiko's golden era. It features a Cream dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-be4de84c464a]

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

34j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1966

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