Seiko Cal. 7121 - 780

Seiko 7121-780

The 7121-780 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-3ead066d57de]

Also known as: Shogun, Sea Horse

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
15.6mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Champagne
Jewels
25j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1982

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