Seiko Cal. 7131 - 401

The 7131-401 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7131 caliber with 31j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-9991d63d0953]

Also known as: UFO, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1969

Related Models

• Seiko 7173-916
• Seiko 5262-416
• Seiko 6370-668
• Seiko 5243-682
• Seiko 4572-192
• Seiko 4462-624
• Seiko 6673-419
• Seiko 5683-780
• Seiko 0794-936
• Seiko 6248-121
• Seiko 4539-358
• Seiko 3882-392