The Sennheiser ew 112-p G3 Wireless Portable Microphone System is intended for portable wireless operation, such as video and field recording applications. This system includes a camera-mountable receiver, bodypack transmitter, and ME 2 lavalier microphone. The SK 100 G3 bodypack transmitter and EK 100 G3 receiver synchronize channel and frequency at the touch of a button.
An optional rechargeable battery pack allows you to charge batteries while they remain inside. The receiver includes the CA 2 shoe-mount adapter, for easy installation onto a camera shoe. A backlit display allows for easy operation under dimly lit conditions and its user-friendly menu makes operation quick and easy.
 
 
https://www.bhphotovideo.com/c/product/618739-REG/Sennheiser_EW_112P_G3_A_EW112_p_G3_Camera_Mount.html