Seiko Cal. 6633 - 878

Released in 1998, the Cal. 6633 with design code 878 was part of Seiko's domestic market collection. With its 19mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-38abe2ec7052]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

190m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1998

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