Seiko Cal. 6678 - 591

The Seiko 6678-591 represents an important milestone in Seiko's 1965 lineup. With its 22mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-2cbe37dfe79d]

Also known as: Sumo, Bullhead

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1965

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