Seiko Cal. 7188 - 735

This Spring Drive model from 1968 features a 37mm Hardlex-Coated Steel case. It features a Green dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-5ae9518a2f6b]

Also known as: World Timer, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1968

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