Seiko Cal. 6640 - 802

The Seiko 6640-802 represents an important milestone in Seiko's 1987 lineup. With its 19mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-6e3dc163cec2]

Also known as: Shogun, Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1987

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