Seiko Cal. 5647 - 409

The Seiko 5647-409 represents an important milestone in Seiko's 1979 lineup. Powered by the 5647 caliber with 21j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-4c28884b1dd9]

Also known as: Helmet, Bellmatic

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

35mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1979

Related Models

• Seiko 6656-556
• Seiko 6617-349
• Seiko 7120-159
• Seiko 5667-207
• Seiko 5285-645
• Seiko 4482-791
• Seiko 4435-835
• Seiko 4433-902
• Seiko 6663-128
• Seiko 4563-751
• Seiko 6165-629
• Seiko 3815-880