Seiko Cal. 6648 - 604

The 6648-604 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6648 caliber with 22j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-2e749def6f10]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

8.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1974

Related Models

• Seiko 0792-877
• Seiko 7111-496
• Seiko 4514-934
• Seiko 4589-776
• Seiko 4440-902
• Seiko 6327-196
• Seiko 5679-393
• Seiko 6327-391
• Seiko 6347-830
• Seiko 5617-408
• Seiko 5264-479
• Seiko 7173-488