Seiko Cal. 6391 - 720

Released in 1994, the Cal. 6391 with design code 720 was part of Seiko's domestic market collection. With its 22mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-284dc09896cb]

Also known as: Tuna, Flighty

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1994

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