Seiko Cal. 6688 - 561

This Spring Drive model from 1999 features a 40mm Titanium case. Powered by the 6688 caliber with 23j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-5c08938c9a80]

Also known as: UFO, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Green

Jewels

23j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1999

Related Models

• Seiko 4518-323
• Seiko 6649-196
• Seiko 6643-467
• Seiko 4513-927
• Seiko 4526-420
• Seiko 7093-187
• Seiko 5219-167
• Seiko 6249-744
• Seiko 6645-260
• Seiko 6123-818
• Seiko 6170-159
• Seiko 6629-798