Seiko Cal. 6640 - 833

The 6640-833 is a sought-after Quartz piece from Seiko's golden era. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-0665cbb93975]

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1981

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