Seiko Cal. 7131 - 633

Seiko 7131-633

The 7131-633 is a sought-after Kinetic piece from Seiko's golden era. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-32faa87f981f]

Also known as: Sumo, Shogun

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
39mm
Case Thickness
13.1mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
150m
Dial Color
Black
Jewels
31j
Frequency
28,800 bph
Power Reserve
42 hours
Year
1985

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