Seiko Cal. 6635 - 667

The 6635-667 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6635 caliber with 21j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-7fafcdb25b67]

Also known as: World Timer, Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1987

Related Models

• Seiko 7012-245
• Seiko 3851-225
• Seiko 3875-602
• Seiko 7115-179
• Seiko 6618-630
• Seiko 6265-952
• Seiko 4583-130
• Seiko 7033-794
• Seiko 3894-166
• Seiko 6229-139
• Seiko 5638-280
• Seiko 5219-384