Teradek Ace 500 TX/RX, Latency-Free Video Radio System, Sends uncompressed video signal up to 1080p60 latency-free over up to 150 metres, Transmitter transmits to up to 4 Ace or Bolt receivers, Input/Output: HDMI, 1x ¼-20"" thread socket for mounting camera arms or hot shoes, as well as 2x 4-40"" points for further mounting options, Weight of transmitter: 126 g, Weight of receiver: 146 g