Seiko Cal. 6391 - 515

This Spring Drive model from 1974 features a 41mm Gold-Plated case. It features a Silver dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-f1212b1a8087]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

8.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

120m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1974

Related Models

• Seiko 4427-239
• Seiko 7095-400
• Seiko 6282-702
• Seiko 6270-378
• Seiko 3855-211
• Seiko 7181-968
• Seiko 5681-284
• Seiko 5232-564
• Seiko 6663-547
• Seiko 7152-787
• Seiko 7061-719
• Seiko 5296-778