Seiko Cal. 6635 - 509

The Seiko 6635-509 represents an important milestone in Seiko's 1973 lineup. Powered by the 6635 caliber with 36j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-b4f58d8f4fd0]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1973

Related Models

• Seiko 6123-875
• Seiko 7151-372
• Seiko 6231-308
• Seiko 5657-831
• Seiko 0757-653
• Seiko 3896-392
• Seiko 6672-576
• Seiko 4514-316
• Seiko 4562-536
• Seiko 5699-678
• Seiko 7112-344
• Seiko 4578-248