Seiko Cal. 6639 - 763

The Seiko 6639-763 represents an important milestone in Seiko's 1995 lineup. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-6053bbf74a48]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

32j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1995

Related Models

• Seiko 0734-228
• Seiko 5687-518
• Seiko 3887-808
• Seiko 0739-873
• Seiko 4593-450
• Seiko 5281-169
• Seiko 5617-370
• Seiko 3894-538
• Seiko 5645-667
• Seiko 6157-718
• Seiko 0722-662
• Seiko 4571-281