Seiko Cal. 6384 - 645

This Spring Drive model from 1974 features a 46mm PVD Black case. Powered by the 6384 caliber with 18j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-0348cf6a2a1b]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1974

Related Models

• Seiko 0725-901
• Seiko 3836-691
• Seiko 6238-699
• Seiko 4595-797
• Seiko 6357-850
• Seiko 7172-301
• Seiko 6318-929
• Seiko 3868-513
• Seiko 4447-375
• Seiko 5653-204
• Seiko 5658-746
• Seiko 4546-416