Seiko Cal. 7181 - 635

Seiko 7181-635

The Seiko 7181-635 represents an important milestone in Seiko's 1970 lineup. It features a Black dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-98640c1eefb1]

Also known as: Sumo, Silverwave

Specifications

Movement
Kinetic
Case Material
Gold-Plated
Case Width
38mm
Case Thickness
9.0mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
120m
Dial Color
Black
Jewels
32j
Frequency
28,800 bph
Power Reserve
46 hours
Year
1970

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