Seiko Cal. 7031 - 250

The Seiko 7031-250 represents an important milestone in Seiko's 1967 lineup. It features a Navy dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-be7e7a8e976c]

Also known as: Tuna, Silverwave

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

35mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1967

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