Seiko Cal. 6642 - 973

The Seiko 6642-973 represents an important milestone in Seiko's 1978 lineup. Powered by the 6642 caliber with 28j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-863989997fba]

Also known as: Helmet, UFO

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1978

Related Models

• Seiko 4570-667
• Seiko 4412-507
• Seiko 7176-125
• Seiko 4453-361
• Seiko 4411-582
• Seiko 6670-424
• Seiko 7063-388
• Seiko 4425-940
• Seiko 6633-332
• Seiko 7181-477
• Seiko 6350-742
• Seiko 7094-135