The Comica VDLive10 USB wireless microphone system would have to be the most compact system available. https://geni.us/Comica_VDLive10_USB Not only is it a small dual system, but it has features that leave many of its competitors behind. The VDLive10 has a true 2 channel receiver and is designed to directly connect digitally to your mobile, tablet, Mac or PC. Plus it has true two way communication allowing you to stream on platforms like Zoom and Skype and monitor wirelessly at the transmitter end.
TRS to TRS Cable: https://geni.us/RODE_SC2_TRS-TRS