This Galaxy Audio AS - 1100 Wireless IEM System operates in the L Band from 655 - 679 MHz. Note that it does not come with a power supply. Due to its specific frequency range, it's not legally usable in the U.S. Always check your country's wireless frequency laws before buying. The system includes a correct power supply and the original box. There's a minor issue where the bodypack is sticky because of plastic corrosion, but it works perfectly.

Using this Galaxy Audio AS - 1100 Wireless IEM System is easy. First, make sure to get a suitable power supply as it's not included. Check your country's laws about wireless frequencies to ensure you can use it legally. When you start using it, turn it on carefully and adjust the settings according to your needs. As for maintenance, keep the system clean. Since the bodypack has some plastic corrosion, be gentle when handling it. Store it in a dry and cool place to prevent further damage. If you notice any new issues, it's best to get it checked by a professional.