Seiko Cal. 6320 - 740

Released in 1987, the Cal. 6320 with design code 740 was part of Seiko's domestic market collection. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-71edc8eab6e8]

Also known as: Sumo, Flighty

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1987

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