Seiko Cal. 6647 - 720

The Seiko 6647-720 represents an important milestone in Seiko's 1968 lineup. Powered by the 6647 caliber with 27j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-dc8c222872e7]

Also known as: Pogue, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

White

Jewels

27j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1968

Related Models

• Seiko 6198-511
• Seiko 5630-299
• Seiko 0719-666
• Seiko 5225-895
• Seiko 3889-935
• Seiko 7167-477
• Seiko 5663-708
• Seiko 6633-836
• Seiko 7029-865
• Seiko 7186-474
• Seiko 6376-291
• Seiko 6233-158