This amazing system comes with an SR 300 IEM G3 stereo transmitter and an EK 300 IEM G3 bodypack receiver. It operates in the 516 - 558 MHz frequency range. Before buying, make sure to check your country's wireless frequency regulations as some frequency ranges might be illegal in certain countries. Batteries aren't included. The transmitter software version is 1.7.7 and the bodypack software version is 1.8.0. Note that it doesn't come with a transmitter antenna. It includes a proper power supply.

Using this Sennheiser wireless in - ear monitoring system is easy. First, connect the power supply to get it up and running. You'll need to provide your own batteries for the parts that require them. When you start using it, ensure you're within the 516 - 558 MHz frequency range allowed in your country. Before each use, check the software revisions of the transmitter and bodypack. Keep in mind it doesn't have a transmitter antenna, so you'll need to source one if you need it. For maintenance, store it in a dry and cool place. Don't expose it to extreme temperatures or moisture. Also, make sure to clean it gently with a soft cloth regularly to keep it in good condition.