Seiko Cal. 6397 - 431

This Spring Drive model from 1988 features a 39mm PVD Black case. Powered by the 6397 caliber with 17j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-369c0d21b79c]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1988

Related Models

• Seiko 7154-255
• Seiko 7160-172
• Seiko 7094-743
• Seiko 6665-496
• Seiko 5688-823
• Seiko 0794-382
• Seiko 6257-672
• Seiko 4474-577
• Seiko 7076-708
• Seiko 4571-403
• Seiko 4575-842
• Seiko 6669-353