Seiko Cal. 7178 - 991

Seiko 7178-991

The 7178-991 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7178 caliber with 29j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-ca50cc1b63af]

Also known as: UFO

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
43mm
Case Thickness
14.3mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
100m
Dial Color
Green
Jewels
29j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1973

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seikata-wm-ca50cc1b63af