Seiko Cal. 7031 - 998

This Automatic model from 1977 features a 36mm PVD Black case. It features a Silver dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-9ea483a57a1a]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1977

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