Seiko Cal. 6639 - 563

The Seiko 6639-563 represents an important milestone in Seiko's 1977 lineup. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-471b59a194f1]

Also known as: Goldfeather

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Champagne

Jewels

34j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1977

Related Models

• Seiko 7060-701
• Seiko 7175-456
• Seiko 3838-913
• Seiko 4442-264
• Seiko 6343-523
• Seiko 6187-988
• Seiko 0789-351
• Seiko 6665-632
• Seiko 7031-746
• Seiko 5633-541
• Seiko 5694-398
• Seiko 0720-531