Seiko Cal. 7113 - 637

Seiko 7113-637

The 7113-637 is a sought-after Hand-Winding piece from Seiko's golden era. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-f2358c7d6def]

Also known as: Sumo

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
44mm
Case Thickness
10.6mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Champagne
Jewels
20j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1971

Related Models

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