Seiko Cal. 7178 - 321

The Seiko 7178-321 represents an important milestone in Seiko's 1981 lineup. Powered by the 7178 caliber with 33j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-c4b638702b35]

Also known as: Tuna, Arnie

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1981

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