The Sure P9TRA425CL rechargeable Wireless in-ear monitoring system lays to rest one of the bigest issues with in-ear monitoring systems; namely, that once a performer's mix was dialed in, it was set in stone for the duration of the show. The P9TRA425CL's cutting-edge CueMode changes all that, allowing the mix engineer to store up to 20 separate channels per bodypack, and make changes at any time. The system includes a rechargeable bodypack receiver - so you can say goodbye to battery worries. It's also a pleasure to configure, automatically zeroing in on the clearest frequencies. The package also includes the half-rack P9T transmitter and SE425-CL earphones. For in-ear monitoring, check out the P9TRA425CL Rechargeable.