Seiko Cal. 6637 - 529

The Seiko 6637-529 represents an important milestone in Seiko's 1972 lineup. Powered by the 6637 caliber with 31j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-174fa59a3c23]

Also known as: Shogun, Bullhead

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1972

Related Models

• Seiko 6671-963
• Seiko 0788-315
• Seiko 0750-580
• Seiko 4569-585
• Seiko 5296-410
• Seiko 5651-688
• Seiko 3814-707
• Seiko 4555-127
• Seiko 7012-830
• Seiko 6220-892
• Seiko 7128-375
• Seiko 6215-385