The Hollyland MARS 300 Dual HDMI Wireless Video Transmitter and Receiver System allows you to transmit video footage with qualities up to 1080p60 with no wires required. The transmitter provides a single HDMI input plus an HDMI loop-out for viewing on an on-board monitor and the receiver provides two HDMI outputs. Features include line-of-sight transmission up to 300', a built-in L-series battery plate on each unit, and durable metal housings. The transmitter and receiver each measure a petite 4 x 2.4" and are constructed with durable metal housings and a 1/4"-20 mounting thread. Both accept a wide 6-16 VDC input range and can be powered using an L-series type battery or the single included DC adapter. The Mars 300 set comes with five antennas (including one spare), a cold shoe, and a 1/4"-20 adapter.