Seiko Cal. 6639 - 885

The 6639-885 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6639 caliber with 29j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-1a96c8ec1f56]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Cream

Jewels

29j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1983

Related Models

• Seiko 6679-710
• Seiko 6646-570
• Seiko 4496-493
• Seiko 4524-906
• Seiko 7083-307
• Seiko 0738-810
• Seiko 6118-557
• Seiko 6177-870
• Seiko 5613-324
• Seiko 0786-287
• Seiko 5277-100
• Seiko 4429-575