Seiko Cal. 6643 - 754

The Seiko 6643-754 represents an important milestone in Seiko's 1985 lineup. Powered by the 6643 caliber with 22j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-e8a6c9715ad6]

Also known as: Turtle, UFO

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1985

Related Models

• Seiko 6132-445
• Seiko 6651-396
• Seiko 0755-773
• Seiko 3817-302
• Seiko 6368-308
• Seiko 5668-950
• Seiko 7118-678
• Seiko 6294-285
• Seiko 7158-305
• Seiko 5234-182
• Seiko 6659-305
• Seiko 7180-976