Seiko Cal. 6636 - 524

The Seiko 6636-524 represents an important milestone in Seiko's 1987 lineup. Powered by the 6636 caliber with 19j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-570bd48b7fb9]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Silver

Jewels

19j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1987

Related Models

• Seiko 4538-373
• Seiko 6696-799
• Seiko 6314-184
• Seiko 6612-200
• Seiko 3841-835
• Seiko 6670-971
• Seiko 7035-819
• Seiko 7123-165
• Seiko 7199-252
• Seiko 6363-343
• Seiko 5683-768
• Seiko 4453-819