Seiko Cal. 7031 - 639

The 7031-639 is a sought-after Solar piece from Seiko's golden era. With its 19mm lug width and 8.0mm profile, it sits comfortably on most wrists. [seikata-wm-0ccc0cedb302]

Also known as: Bellmatic, Navigator

Specifications

Movement

Solar

Case Material

Titanium

Case Width

40mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1972

Related Models

• Seiko 4521-728
• Seiko 7168-948
• Seiko 6656-878
• Seiko 4495-591
• Seiko 6193-654
• Seiko 3880-186
• Seiko 5637-889
• Seiko 6322-513
• Seiko 6348-267
• Seiko 6612-628
• Seiko 6138-738
• Seiko 5266-846