The WX1800BP is a True Diversity, frequency Agile UHF Wireless Body Pack System which operates in the 550-590mHz frequency band and features 100 channels for optimum clarity of signal. Auto-scan and IR sync functions make set up and channel-changing a breeze. Enjoy up to 10 hours of run time using two AA batteries, with a battery level indicator on both the transmitter and receiver, so you’ll know when you need to replace them. All metal construction and included rack mounting hardware help ensure your equipment will stand up to even the toughest conditions.