Seiko Cal. 7140 - 937

Seiko 7140-937

The 7140-937 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7140 caliber with 29j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-1ecb86c324df]

Also known as: Rally, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
39mm
Case Thickness
10.3mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
170m
Dial Color
Silver
Jewels
29j
Frequency
21,600 bph
Power Reserve
43 hours
Year
1980

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