Seiko Cal. 3840 - 331

This Spring Drive model from 1985 features a 36mm Titanium case. Powered by the 3840 caliber with 18j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-44be98f5b7a4]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1985

Related Models

• Seiko 7166-659
• Seiko 6136-143
• Seiko 3819-518
• Seiko 7150-455
• Seiko 6239-908
• Seiko 5671-281
• Seiko 3839-482
• Seiko 7159-988
• Seiko 4462-802
• Seiko 0791-913
• Seiko 6360-865
• Seiko 6330-179