Seiko Cal. 6678 - 516

The 6678-516 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6678 caliber with 29j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-c557c97cdd18]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1999

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