Seiko Cal. 6643 - 368

The Seiko 6643-368 represents an important milestone in Seiko's 1969 lineup. Powered by the 6643 caliber with 33j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-53279d053613]

Also known as: Samurai

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

White

Jewels

33j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1969

Related Models

• Seiko 5257-258
• Seiko 6240-515
• Seiko 6263-418
• Seiko 5246-565
• Seiko 0759-968
• Seiko 6220-839
• Seiko 5213-794
• Seiko 4596-293
• Seiko 4487-286
• Seiko 3844-904
• Seiko 7189-752
• Seiko 5648-970