Seiko Cal. 7164 - 731

The Seiko 7164-731 represents an important milestone in Seiko's 1971 lineup. Powered by the 7164 caliber with 26j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-d117fb6cb3df]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1971

Related Models

• Seiko 4570-488
• Seiko 4556-662
• Seiko 3837-497
• Seiko 4553-650
• Seiko 4435-158
• Seiko 6283-781
• Seiko 6653-994
• Seiko 6696-638
• Seiko 7017-693
• Seiko 4557-864
• Seiko 4427-441
• Seiko 6643-707