Seiko Cal. 7131 - 351

Seiko 7131-351

The 7131-351 is a sought-after Automatic piece from Seiko's golden era. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-a96a515e4c3c]

Also known as: Sumo, Baby Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
34mm
Case Thickness
11.1mm
Lug Width
22mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
130m
Dial Color
Black
Jewels
23j
Frequency
21,600 bph
Power Reserve
56 hours
Year
1989

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