Seiko Cal. 7180 - 100

This Spring Drive model from 1978 features a 36mm Hardlex-Coated Steel case. It features a Silver dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-1d81b00080fd]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1978

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