WIRELESS SYSTEM: HANDHELD Professional wireless system for dynamic microphones and battery-operated condenser microphones. Includes transmitter and receiver. Transmission in 2.4Ghz. 6 channels. Frequency response 20Hz-20Khz. Range 30m. 24 Bit A/D conversion. Dynamic range 110dB. Battery life: 5 hours. Lithium battery. Includes simultaneous dual charging USB cable for receiver and transmitter. No need power supply. Colour: Black