Ultra compact wireless lavalier microphone system with miniature rechargeable transmitter and receiver. The system operates on the license-free 5.8GHz band and all audio is digitally encoded, avoiding the noise associated with some VHF or UHF systems. The system allows up to 2 transmitters to be paired with a receiver, multiple receivers to pair to a single or pair of transmitters, and up to 4 transmitters to operate in the same area simultaneously. You can utilize the built-in microphone or connect to a neckband or lavalier microphone. Carrier frequency is 5.8GHz ISM band, with power supply from an internal rechargeable Li-ion battery, and a maximum range of up to 60m. The microphone has an omnidirectional polar pattern, a S/N ratio of 102dB, and the transmitter power is 7dBm with a dynamic range of 90dB.