Seiko Cal. 6646 - 787

Released in 1975, the Cal. 6646 with design code 787 was part of Seiko's domestic market collection. With its 20mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-beed17adc668]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

White

Jewels

29j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1975

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