Seiko Cal. 6633 - 471

The Seiko 6633-471 represents an important milestone in Seiko's 1971 lineup. Powered by the 6633 caliber with 20j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-3ab9fc070d4d]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1971

Related Models

• Seiko 6220-502
• Seiko 7018-523
• Seiko 7143-419
• Seiko 6130-712
• Seiko 6183-741
• Seiko 4458-863
• Seiko 6386-503
• Seiko 3810-994
• Seiko 6141-438
• Seiko 6349-296
• Seiko 4520-926
• Seiko 4466-820