Sennheiser XSW 1-835 Dual E-Band Vocal, Diversity UHF Wireless System, With antenna diversity, Set consisting of 2x SKM 835-XSW handheld transmitter with dynamic capsule (cardioid pattern) and 1x EM-XSW1 DUAL desktop receiver (1U), Frequency range E band: 821 - 832 / 863 - 865 MHz, 24 MHz bandwidth, 8 Frequency banks each with 10 channels, Integrated antennae, Auto-Tune to find free frequencies, Audio frequency range: 50 - 16,000 Hz, XLR and jack outputs, Adjustable squelch, Mic/ line switchable, Includes 1x NT 12-5 CW power supply, 2x MZQ1 microphone holder and 4x AA battery