Seiko Cal. 6678 - 391

Released in 1968, the Cal. 6678 with design code 391 was part of Seiko's domestic market collection. It features a Green dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-bc1e4e6a6f1e]

Also known as: Sumo, Panda

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

10.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1968

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