Seiko Cal. 6378 - 658

This Quartz model from 1981 features a 44mm Stainless Steel case. With its 22mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-24e19d42c528]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

11.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1981

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