Seiko Cal. 6690 - 937

The Seiko 6690-937 represents an important milestone in Seiko's 1988 lineup. Powered by the 6690 caliber with 19j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-b6b6b142fe97]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

19j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1988

Related Models

• Seiko 4438-541
• Seiko 6377-768
• Seiko 4449-670
• Seiko 6118-981
• Seiko 6160-568
• Seiko 6395-727
• Seiko 7018-972
• Seiko 5612-862
• Seiko 4469-455
• Seiko 3895-710
• Seiko 6674-223
• Seiko 7093-891