Seiko Cal. 6670 - 317

The 6670-317 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-142b803a602c]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1992

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