Seiko Cal. 0721 - 291

The 0721-291 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0721 caliber with 33j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-bff4c6548a96]

Also known as: Bullhead, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1976

Related Models

• Seiko 6143-653
• Seiko 4542-592
• Seiko 4452-658
• Seiko 6316-936
• Seiko 5665-665
• Seiko 7151-505
• Seiko 0769-586
• Seiko 5210-937
• Seiko 6372-765
• Seiko 6114-440
• Seiko 6153-294
• Seiko 4445-997