Seiko Cal. 6397 - 524

This Spring Drive model from 1970 features a 41mm PVD Black case. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-71dd53d3d800]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

17j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1970

Related Models

• Seiko 6676-854
• Seiko 6662-970
• Seiko 6149-931
• Seiko 5660-735
• Seiko 4523-618
• Seiko 3874-272
• Seiko 0737-446
• Seiko 0724-339
• Seiko 4427-582
• Seiko 5626-203
• Seiko 6616-668
• Seiko 7177-140