Seiko Cal. 6678 - 542

The 6678-542 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6678 caliber with 25j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-cc1f67da5668]

Also known as: Bullhead, UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

25j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1987

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