Seiko Cal. 6660 - 678

The Seiko 6660-678 represents an important milestone in Seiko's 1982 lineup. Powered by the 6660 caliber with 23j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-5278f5020e60]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Cream

Jewels

23j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1982

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