1 x 4-channel cardioid dynamic microphone 1 x Pocket transmitter with headset and professional cardioid dynamic microphone Base in SMT technology with included components for assembly Created for both professional and amateur use Unidirectional dynamic cardioid microphone provides clear and bright sound Special dynamic compression/expansion to improve signal-to-noise ratio without affecting audio quality The high-performance design ensures trouble-free use of the wireless microphone even after many hours of use ISM Europe band (863-865 MHz), does not require a special license for use in Europe 19" standard RACK system with included optional mounting kit for one or two receivers System: Frequency range: UHF 863-865MHz Dynamic range: > 90dB THD: < 0.4% Frequency response: 40Hz-15KHz ±3dB Packaging dimensions: 375 x 285 x 65 mm Set weight: 1.6 kg Receiver: Power: 10mW Power supply: DC17V - 300mA Power consumption: 4W S/N Ratio: >95dB Sensitivity: >7dBuV (SINAD=30dB) Transmitter/Microphone: Power: 10mW Modulation type: FM Maximum deviation: ±20KHz Power supply: 3V battery (2x1.5V AA) Battery life: 5 hours Microphone dimensions: Ø53 x 255 mm Microphone weight: 0.26kg (with batteries) Transmitter dimensions: 62 x 103 x 30 mm Transmitter weight: 0.135kg Warranty: 24 months