Seiko Cal. 6378 - 180

Released in 1999, the Cal. 6378 with design code 180 was part of Seiko's domestic market collection. With its 22mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-77711ab8aba8]

Also known as: Sumo, Bellmatic

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Cream

Jewels

34j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1999

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