Seiko Cal. 7131 - 797

The Seiko 7131-797 represents an important milestone in Seiko's 1992 lineup. Powered by the 7131 caliber with 29j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-85c3db3ee1d2]

Also known as: Monster, Baby Tuna

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1992

Related Models

• Seiko 6639-616
• Seiko 0781-164
• Seiko 4571-900
• Seiko 6138-522
• Seiko 5270-355
• Seiko 3820-456
• Seiko 6661-736
• Seiko 5294-174
• Seiko 7039-397
• Seiko 7192-695
• Seiko 0758-813
• Seiko 6153-753