Seiko Cal. 7178 - 321

Seiko 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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