This Sennheiser ew 100 G2 beltpack wireless system operates at 626 - 662 MHz and is for use outside the U.S. Before you buy, make sure to check your country's wireless frequency laws. Some frequency ranges might be illegal depending on where you are. It includes a bodypack and a receiver, but no power supply or antenna. Note that the belt pack has tape on the back to hold the belt clip. Remember, it does not come with a power supply.

Using this Sennheiser wireless system is easy. First, connect the bodypack and receiver properly. Since it doesn't come with a power supply, you'll need to get one that suits it. Before using, check your country's wireless frequency laws to avoid any legal issues. When using the belt pack, be aware that there's tape on the back to hold the belt clip. To maintain it well, keep it in a dry and clean place. Don't expose it to extreme temperatures or humidity. Also, handle the bodypack and receiver gently to avoid any damage.