Seiko Cal. 4431 - 394

This Automatic model from 1976 features a 41mm Gold-Plated case. Powered by the 4431 caliber with 19j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-837e21a79a02]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1976

Related Models

• Seiko 5654-277
• Seiko 7088-689
• Seiko 7061-980
• Seiko 6295-339
• Seiko 4561-634
• Seiko 6639-745
• Seiko 7110-194
• Seiko 7036-323
• Seiko 0773-649
• Seiko 6225-885
• Seiko 5238-294
• Seiko 5246-223