Seiko Cal. 5643 - 566

The Seiko 5643-566 represents an important milestone in Seiko's 1965 lineup. Powered by the 5643 caliber with 25j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-e8bb89840cd1]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

11.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1965

Related Models

• Seiko 6619-404
• Seiko 6656-220
• Seiko 6190-169
• Seiko 4498-161
• Seiko 6236-861
• Seiko 5259-162
• Seiko 6612-517
• Seiko 4589-503
• Seiko 7151-699
• Seiko 5615-303
• Seiko 3838-602
• Seiko 5652-981