MARS 400s SDI/HDMI wireless transmission system with antennas. Selling due to equipment reorganization. It was used on location before, and there are some scratches. Two separately sold mushroom antennas are included. (One of the mushroom antennas has a crack on the outer wall, but it should not affect its use.) AC cables are not included. It can be used if you prepare an L-battery or a general-purpose DC cable, which is used in many electronic devices. There are no problems with the operation. - Model name: MARS 400s - Included items: Antennas, instruction manual - Function: Wireless transmission system Thank you for viewing.