Seiko Cal. 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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