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 1920x1080@60Hz ; 4. The transfer is efficiency to that the playback fluency; 5. Built-in automatic balance system, the picture is fluent, clear and stable; 6. The built-in ESD electrostatic protection circuit, comprehensive security protection system; 7. Simple and convenient installation, plug and play, do not need to set up. Warm Tips: 1. The RX cannot be work alone, pls do not buy it seperately, RX 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 block signal transmission 3. With the increase of RXs, or the barriers, the wireless transmission distance be shortened. The final distance shall be subject to the actual use. Our product is chip and upgraded antenna version, support longer transmission distance and more stable new and high quality,buy with confidence TX=Transmitter,RX=Receiver This 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 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: Black Material: plastic Package Contents: 1 * TX transmitter 1 * RX receiver 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.