Seiko Cal. 4431 - 600

The Seiko 4431-600 represents an important milestone in Seiko's 1978 lineup. Powered by the 4431 caliber with 29j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-e99cdb376a30]

Also known as: Monster, Navigator

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1978

Related Models

• Seiko 6349-550
• Seiko 0716-403
• Seiko 0766-531
• Seiko 4481-947
• Seiko 6231-926
• Seiko 6236-415
• Seiko 7015-909
• Seiko 0752-586
• Seiko 4513-732
• Seiko 6393-326
• Seiko 5664-666
• Seiko 6670-708