Seiko Cal. 6178 - 641

Released in 1974, the Cal. 6178 with design code 641 was part of Seiko's domestic market collection. With its 18mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-26db557afa03]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1974

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