Seiko Cal. 6648 - 343

The Seiko 6648-343 represents an important milestone in Seiko's 1983 lineup. Powered by the 6648 caliber with 36j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-17db08f93d44]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1983

Related Models

• Seiko 6285-531
• Seiko 6675-650
• Seiko 7111-956
• Seiko 7124-422
• Seiko 6177-493
• Seiko 0762-320
• Seiko 6284-421
• Seiko 7124-702
• Seiko 6287-281
• Seiko 4587-953
• Seiko 6277-794
• Seiko 5614-742