Seiko Cal. 0727 - 979

This Spring Drive model from 1985 features a 39mm Two-Tone case. It features a Navy dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-3a494dac48f7]

Also known as: Helmet, World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1985

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