Seiko Cal. 6690 - 739

The Seiko 6690-739 represents an important milestone in Seiko's 1980 lineup. Powered by the 6690 caliber with 21j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-dd6974b69879]

Also known as: Sumo, Arnie

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1980

Related Models

• Seiko 7095-400
• Seiko 3866-620
• Seiko 4432-396
• Seiko 4412-712
• Seiko 4562-802
• Seiko 6346-228
• Seiko 4597-842
• Seiko 6168-648
• Seiko 7185-167
• Seiko 7177-234
• Seiko 0790-915
• Seiko 4481-938