Seiko Cal. 6628 - 878

Released in 1971, the Cal. 6628 with design code 878 was part of Seiko's domestic market collection. It features a Navy dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-f94c81b03d1a]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

26j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1971

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