Seiko Cal. 6647 - 988

The Seiko 6647-988 represents an important milestone in Seiko's 1988 lineup. Powered by the 6647 caliber with 27j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-e03dd7b2b93c]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Champagne

Jewels

27j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1988

Related Models

• Seiko 6289-310
• Seiko 4489-711
• Seiko 0777-523
• Seiko 7145-246
• Seiko 0776-165
• Seiko 3874-226
• Seiko 6138-256
• Seiko 7011-574
• Seiko 3828-685
• Seiko 0774-755
• Seiko 6620-211
• Seiko 5674-622