Seiko Cal. 6650 - 957

The Seiko 6650-957 represents an important milestone in Seiko's 1968 lineup. Powered by the 6650 caliber with 31j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-9efef77c4a73]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Cream

Jewels

31j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1968

Related Models

• Seiko 5629-243
• Seiko 0724-364
• Seiko 3859-598
• Seiko 3895-546
• Seiko 7112-581
• Seiko 6113-747
• Seiko 6343-707
• Seiko 5630-477
• Seiko 7018-885
• Seiko 5628-671
• Seiko 3857-405
• Seiko 0727-183