Seiko Cal. 7161 - 306

This Spring Drive model from 1988 features a 39mm Hardlex-Coated Steel case. It features a Black dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-f81104b1b57e]

Also known as: Helmet, Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1988

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