Seiko Cal. 7031 - 183

This Hand-Winding model from 1980 features a 34mm Stainless Steel case. Powered by the 7031 caliber with 27j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-d6903f7fbd31]

Also known as: Bullhead, UFO

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1980

Related Models

• Seiko 6154-962
• Seiko 5250-203
• Seiko 6117-639
• Seiko 5683-523
• Seiko 5614-131
• Seiko 3829-422
• Seiko 5214-788
• Seiko 4589-501
• Seiko 5654-364
• Seiko 7153-836
• Seiko 6624-795
• Seiko 4495-452