Seiko Cal. 7031 - 638

This Automatic model from 1990 features a 38mm Titanium case. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-e2ead822fcf4]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

38mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1990

Related Models

• Seiko 5687-404
• Seiko 4463-673
• Seiko 6670-386
• Seiko 6267-958
• Seiko 6257-432
• Seiko 3813-286
• Seiko 6353-119
• Seiko 6160-569
• Seiko 4466-308
• Seiko 5647-174
• Seiko 6289-938
• Seiko 0779-257