1. HDMI video and audio transmission via built-in wireless transmission protocol,no need wifi or internet 2. HDMI 1.3 ,HDCP1.2 compatible; 3. Support regular HD video resolution up to 1920x1080 60Hz ; 4. The transfer is efficiency to ensure that the playback fluency; 5. Built-in automatic balance system, the picture is fluent, clear and stable; Warm Tips:1.The RX cannot be work alone, pls do not buy it seperately it must be used with a TX! you can buy up to 4 RXs to use with 1 TX 2.Can't go through walls or any barriers,pls use it in a barrier-free open space because the walls,barriers will block signal transmission, 3.With the increase of RXs, or the barriers, the wireless transmission distance will be shortened. The built-in ESD electrostatic protection circuit, comprehensive security protection system; Simple and convenient installation, plug and play, do not need to set up. Our product is Imported chip and upgraded antenna version, support longer transmission distance and more stable and high quality,buy with confidence TX=Transmitter,RX=Receiver This HDMI extender built-in wireless transmission protocol,it can wireless transmit HD audio and video signal, at the same time,The equipment has excellent image processing and transmission capacity,makes signal transmission more smooth and steady,is a kind of economic and efficient way of HDMI 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 relax, and is better for protecting eyes Color: As Shown Material: ABS Package Contents: 1 x transmitter 1 x receiver