Seiko Cal. 6648 - 840

The 6648-840 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-b6dcc695dfb1]

Also known as: Shogun, Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

White

Jewels

27j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1983

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