Any filmmaker knows the importance of investing in a decent set of microphones. The Rode Wireless GO Microphone is a compact solution for wireless audio. It is based on a 2.4 GHz digital transmission with a range of up to 230 feet.
The Wireless GO has transmitters and receivers that weigh one ounce each. They have a 50 Hz to 20 kHz frequency range. You get (0 dB, -6 dB, and -12 dB) receiver gain settings and can operate 8 units simultaneously.