Seiko Cal. 6640 - 210

The 6640-210 is a sought-after Hand-Winding piece from Seiko's golden era. With its 19mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-ba56ecb20cff]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1980

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