Seiko Cal. 6391 - 665

This Kinetic model from 1967 features a 40mm Titanium case. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-487bcb98b030]

Also known as: Sumo, Bullhead

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Burgundy

Jewels

19j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1967

Related Models

• Seiko 4446-139
• Seiko 6213-968
• Seiko 5692-880
• Seiko 0770-414
• Seiko 4494-690
• Seiko 7176-400
• Seiko 3827-505
• Seiko 3813-384
• Seiko 6227-798
• Seiko 7057-350
• Seiko 6184-939
• Seiko 6637-623