Seiko Cal. 6390 - 231

This Automatic model from 1977 features a 40mm Stainless Steel case. It features a Silver dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-282f65bda7e8]

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Silver

Jewels

29j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1977

Related Models

• Seiko 6622-676
• Seiko 7174-529
• Seiko 4566-809
• Seiko 6384-810
• Seiko 7114-796
• Seiko 4411-449
• Seiko 6230-747
• Seiko 6375-100
• Seiko 7093-819
• Seiko 3815-164
• Seiko 7096-988
• Seiko 6262-729