Seiko Cal. 6639 - 935

The 6639-935 is a sought-after Spring Drive piece from Seiko's golden era. It features a Champagne dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-31eb02805cdf]

Also known as: Crown, Flighty

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Champagne

Jewels

35j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1968

Related Models

• Seiko 7140-826
• Seiko 7052-323
• Seiko 5657-399
• Seiko 4444-375
• Seiko 0767-300
• Seiko 6130-602
• Seiko 5619-148
• Seiko 7179-594
• Seiko 6665-328
• Seiko 7110-539
• Seiko 4434-922
• Seiko 4426-325