Seiko Cal. 6635 - 890

The 6635-890 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6635 caliber with 36j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-ac9db5c7b005]

Also known as: Crown, Arnie

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

36j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1971

Related Models

• Seiko 7061-707
• Seiko 0727-862
• Seiko 5253-867
• Seiko 4457-643
• Seiko 7140-603
• Seiko 7180-450
• Seiko 0780-832
• Seiko 4447-715
• Seiko 4578-386
• Seiko 3883-237
• Seiko 3880-865
• Seiko 7053-566