Leave the cables in your case and simplify your set up with the BOSE wireless RF transmitter for your microphone or other line-level sources such as a mixer. It pairs effortlessly with the wireless RF receiver integrated into the S1 Pro+ and uses a 2.4gHz frequency for reliable wireless connection up to 30 feet. It features onboard controls for on/off and provides up to four hours of battery life. When not in use, the transmitter stores neatly inside the speaker to charge.