Seiko Cal. 6688 - 712

The Seiko 6688-712 represents an important milestone in Seiko's 1966 lineup. Powered by the 6688 caliber with 19j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-6a9a77bc2d44]

Also known as: Navigator, Emperor

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

42mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Green

Jewels

19j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1966

Related Models

• Seiko 7145-554
• Seiko 4583-550
• Seiko 4428-183
• Seiko 5291-308
• Seiko 6251-761
• Seiko 5284-320
• Seiko 5229-818
• Seiko 5245-624
• Seiko 6121-375
• Seiko 5634-573
• Seiko 6279-926
• Seiko 6356-420