Seiko Cal. 6639 - 633

Seiko 6639-633

The 6639-633 is a sought-after Solar piece from Seiko's golden era. Powered by the 6639 caliber with 17j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-e46d1dc0af51]

Also known as: Turtle, Monster

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
46mm
Case Thickness
8.2mm
Lug Width
20mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
130m
Dial Color
Black
Jewels
17j
Frequency
36,000 bph
Power Reserve
47 hours
Year
1965

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