Seiko Cal. 6340 - 668

The Seiko 6340-668 represents an important milestone in Seiko's 1972 lineup. Powered by the 6340 caliber with 28j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-59bf2354e389]

Also known as: UFO, Sportsmatic

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

35mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Black

Jewels

28j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1972

Related Models

• Seiko 7079-785
• Seiko 5663-792
• Seiko 4486-119
• Seiko 5240-522
• Seiko 6368-128
• Seiko 4479-832
• Seiko 5255-785
• Seiko 3839-830
• Seiko 5652-327
• Seiko 7174-984
• Seiko 4429-734
• Seiko 0727-363