Seiko Cal. 4518 - 927

This Spring Drive model from 1983 features a 40mm Titanium case. It features a Navy dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-007c578f3c9d]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1983

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