Seiko Cal. 5648 - 221

The 5648-221 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5648 caliber with 25j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-ae60c87ab694]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1967

Related Models

• Seiko 6247-745
• Seiko 7030-571
• Seiko 7115-761
• Seiko 3841-626
• Seiko 7052-460
• Seiko 7016-378
• Seiko 7092-777
• Seiko 0783-138
• Seiko 5296-868
• Seiko 6193-603
• Seiko 5655-105
• Seiko 3813-818