Seiko Cal. 4431 - 931

The Seiko 4431-931 represents an important milestone in Seiko's 1984 lineup. Powered by the 4431 caliber with 22j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-fde72afe42b8]

Also known as: Goldfeather, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1984

Related Models

• Seiko 7135-797
• Seiko 0780-904
• Seiko 3881-601
• Seiko 4533-730
• Seiko 7154-478
• Seiko 4457-388
• Seiko 7157-566
• Seiko 5221-705
• Seiko 0744-565
• Seiko 6329-983
• Seiko 5293-510
• Seiko 0744-612