Seiko Cal. 6647 - 653

The Seiko 6647-653 represents an important milestone in Seiko's 1970 lineup. Powered by the 6647 caliber with 31j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-f51e7b76b6cb]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

39mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1970

Related Models

• Seiko 7148-232
• Seiko 7038-654
• Seiko 7181-542
• Seiko 5230-969
• Seiko 7118-890
• Seiko 6388-548
• Seiko 7082-794
• Seiko 4470-228
• Seiko 5247-730
• Seiko 5616-297
• Seiko 5229-782
• Seiko 3893-997