Seiko Cal. 6278 - 658

Released in 1983, the Cal. 6278 with design code 658 was part of Seiko's domestic market collection. With its 18mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-e3bd0765abb9]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1983

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