Seiko Cal. 6678 - 681

The 6678-681 is a sought-after Automatic piece from Seiko's golden era. It features a Green dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-b4d93124bc3c]

Also known as: UFO, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1968

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