Seiko Cal. 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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