Seiko Cal. 7129 - 657

Seiko 7129-657

The 7129-657 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-2a34d4c2cb36]

Also known as: Sumo, Tuna

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
44mm
Case Thickness
8.2mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Silver
Jewels
34j
Frequency
28,800 bph
Power Reserve
54 hours
Year
1976

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