Seiko Cal. 6678 - 768

This Spring Drive model from 1977 features a 45mm Titanium case. Powered by the 6678 caliber with 31j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-71b5b7c1c75a]

Also known as: UFO, Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1977

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