Sennheiser XSw 65 Combo Set B-Band, True Diversity UHF Wireless System with up to 960 switchable frequencies, B-Band 614 - 638 MHz, 24 MHz switchable bandwitdth, 8 banks with 12 channels each, Scan Function to find free frequencies, audio frequencyrange 60 - 16.000 Hz, Jack and XLR out, Set contains SKM65 handheld transmitter with condensator capsule supercardioid, EM10 True Diversity 9,5" receiver, SK 20 Bodypack Transmitter, NT2-3 powersupplyl, 2x 50 Ohms BNC Antenna, MZQ1 clamp, 2x AA batteries. Please note: Due to every country having different regulations, you may need to Contact your local licensing authorities before using a wireless system.