Seiko Cal. 7181 - 158

The Seiko 7181-158 represents an important milestone in Seiko's 1973 lineup. It features a Champagne dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-c31898da3a02]

Also known as: Sumo, Bellmatic

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

45mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

29j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1973

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