Seiko Cal. 5660 - 320

The 5660-320 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-d6e6b18ad08e]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1967

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