Seiko Cal. 6660 - 639

The 6660-639 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Cream dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-9c5ae3b3d6ca]

Also known as: Goldfeather, World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1965

Related Models

• Seiko 6190-338
• Seiko 5674-849
• Seiko 7167-384
• Seiko 3820-192
• Seiko 6127-427
• Seiko 6214-976
• Seiko 6130-766
• Seiko 7152-778
• Seiko 4480-967
• Seiko 7111-691
• Seiko 4431-599
• Seiko 5693-800