Seiko Cal. 6398 - 523

This Kinetic model from 1970 features a 39mm PVD Black case. With its 21mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-69aa00b2bac1]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

17j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1970

Related Models

• Seiko 4448-337
• Seiko 6179-326
• Seiko 6113-593
• Seiko 3882-347
• Seiko 4464-575
• Seiko 6366-336
• Seiko 7154-697
• Seiko 4477-429
• Seiko 6385-999
• Seiko 5264-317
• Seiko 6680-831
• Seiko 4473-748