Seiko Cal. 7181 - 889

This Spring Drive model from 1981 features a 40mm Gold-Plated case. It features a Green dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-e523aca35af6]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1981

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