Seiko Cal. 6621 - 640

The 6621-640 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-9c3c3a994b2c]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1975

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