Seiko Cal. 6640 - 251

The 6640-251 is a sought-after Quartz piece from Seiko's golden era. It features a Cream dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-0ab5689d7f0c]

Also known as: Silverwave

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1989

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