1. video and audio transmission via built-in wireless transmission protocol,no need wifi or internet 2. 1.3 ,HDCP1.2 compatible 3. Support regular HD video resolution up to 1920x1080@60Hz 4. The transfer is efficiency to that the playback fluency. Built-in automatic balance system, the is fluent, clear and stable 5. The built-in ESD electrostatic protection circuit, comprehensive security protection system. Simple and convenient installation, plug and play, do not need to set up. Brand new and high quality TX=Transmitter,=Receiver This extender built-in wireless transmission protocol,it can wireless transmit HD audio and video signal, at the same time,The equipment has processing and transmission capacity,makes signal transmission more and steady,is a kind of economic and efficient way of signal extension. It is widly used for Big screen video Conference / home entertainment / online learning / business speech education training /playing game etc. more shocking,more , and is better for protecting eyes Model Number: NEW Upgrade 50m HD Wireless Extender High Definition Support: 1080P Content: Audio&Video WIFI Standard: 2.4G Wireless Type: WIFI Sound : Single Interface: -Compatible color:Black Material:plastic Package Contents: 1 x Transmitter 1 x Receiver 2 x Extension Cable 2 x USB Power Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.