RADO SPACE FLIGHT. It uses an electromagnetic balance wheel. This watch was also featured in the antique watch magazine, LOWBEAT. The design is right in the middle of the space age and is very cool. The case has a hairline finish, giving it a refined design with a touch of maturity. I have cherished it, but I am selling it because my collection has grown too large. It is currently running well, with a daily accuracy of about 30 seconds. Although it was manufactured about 50 years ago, the condition is quite good. The cut glass has some minor scratches, but there are no critical flaws. Unfortunately, the medallion is missing. Please ask any questions or concerns in the comments. Due to potential changes in condition during shipping, I do not offer a warranty on its operation. Please examine the photos carefully and purchase only if you are satisfied. - Thank you for looking. Rado Space filght Space age Vintage Nasa Zodiac Omega Longines Tissot Rado Space Flight Golden Horse Silver Horse Green Horse Astrographic DiaMaster Seamaster Speedmaster Admiral Comet PR516 Space Flight 702