If you're in need of a wireless system that provides either lavalier or earset hands-free options, check out the Shure BLX Lavalier Wireless System and Countryman E6 Earset Mic Kit
. Consisting of a BLX4 single-channel receiver, a BLX1 bodypack transmitter, a Shure CVL cardioid lavalier microphone, and a Countryman E6 omnidirectional earset microphone, the kit provides you with the option of using either one at a time. The wireless system is tuned to Shure's H8 frequency band between 518 and 542 MHz.
Please note, this is a single-channel system, and only one of the included microphones can be used at a time.