Seiko Cal. 6191 - 551

This Spring Drive model from 1968 features a 35mm Titanium case. It features a Cream dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-3b12bb617747]

Also known as: Tuna, Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Cream

Jewels

19j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1968

Related Models

• Seiko 6667-136
• Seiko 3887-102
• Seiko 4453-794
• Seiko 4536-361
• Seiko 6343-393
• Seiko 5216-194
• Seiko 5240-398
• Seiko 6344-848
• Seiko 7073-811
• Seiko 7171-103
• Seiko 6136-676
• Seiko 4594-735