Seiko Cal. 6636 - 663

The Seiko 6636-663 represents an important milestone in Seiko's 1995 lineup. Powered by the 6636 caliber with 19j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-499012df8e2d]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Cream

Jewels

19j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1995

Related Models

• Seiko 7182-708
• Seiko 4583-423
• Seiko 6290-422
• Seiko 5254-772
• Seiko 6237-158
• Seiko 6191-811
• Seiko 6273-769
• Seiko 4572-749
• Seiko 7144-675
• Seiko 5662-607
• Seiko 7197-755
• Seiko 0791-723