Seiko Cal. 6690 - 521

The 6690-521 is a sought-after Kinetic piece from Seiko's golden era. The Fixed bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-f49ff8ba76bc]

Also known as: Turtle

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1974

Related Models

• Seiko 6129-706
• Seiko 7088-751
• Seiko 6330-983
• Seiko 7032-645
• Seiko 5640-378
• Seiko 6652-733
• Seiko 6297-430
• Seiko 6610-526
• Seiko 5660-759
• Seiko 5241-969
• Seiko 7113-538
• Seiko 5232-490