Seiko Cal. 6639 - 135

Seiko 6639-135

The Seiko 6639-135 represents an important milestone in Seiko's 1978 lineup. Powered by the 6639 caliber with 33j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-4a2c69522141]

Also known as: Silverwave

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
13.6mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
200m
Dial Color
Navy
Jewels
33j
Frequency
28,800 bph
Power Reserve
39 hours
Year
1978

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seikata-wm-4a2c69522141