Seiko Cal. 6643 - 428

This Kinetic model from 1976 features a 44mm Gold-Plated case. Powered by the 6643 caliber with 28j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-7693c31621d6]

Also known as: Rally

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1976

Related Models

• Seiko 5672-421
• Seiko 0743-617
• Seiko 4581-704
• Seiko 6283-778
• Seiko 4417-330
• Seiko 6296-299
• Seiko 5252-905
• Seiko 6380-777
• Seiko 5654-881
• Seiko 7192-546
• Seiko 4534-539
• Seiko 0798-669