Seiko Cal. 7131 - 660

The Seiko 7131-660 represents an important milestone in Seiko's 1979 lineup. With its 18mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-9b9dfcc74eac]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1979

Related Models

• Seiko 6122-994
• Seiko 4482-657
• Seiko 7181-445
• Seiko 4511-837
• Seiko 6246-203
• Seiko 5282-150
• Seiko 6381-547
• Seiko 4548-638
• Seiko 7023-562
• Seiko 6298-618
• Seiko 0793-817
• Seiko 4569-779