Item Type: Wireless HD Multimedia Interface Transmitter ReceiverMaterial: Aluminum Alloy, ABSWireless Network: 2.4G/5GResolution: 4KInterface: RX ( Sound, Type C, VGA, HD Multimedia Interface ), TX ( HD Multimedia Interface )Package List1 x Transmitter1 x Receiver2 x Antenna1 x Instruction Manual2 x Type C Cable1 x HD Multimedia Interface Cable1 x Pin1PLUG AND PLAY: Wireless transmitter is plug and play, no need to install the driver, no need to network, simple connection, easy to achieve the same screen transmission after connection, simple and efficient operation. 2DUAL INTERFACES: Wireless extender has dual interfaces of VGA and HD multimedia interface, supporting two interfaces to connect to projectors, monitors, TVs and other large screen devices to meet different user needs, flexible and convenient. 3DUAL ANTENNAS: Wireless transmitter has high gain dual antennas for stronger signal and smooth transmission, while supporting 2.4G+5G transmission, high speed and stable without frame drops. 4HD 4K: Wireless transmitter supports 4K HD picture quality, synchronized sound and video transmission, with efficient and intelligent professional screen casting chip, stable and guaranteed picture quality. 5MULTI DEVICE CONNECTION: Wireless extender supports multiple transmitter connection, one key switch signal without interference, multi screen sharing. Point to point mode, long distance transmission, stable picture quality without lag. 6PROTECTION OF PRIVACY: Wireless extender has a privacy protection function, when the meeting cast screen or class, one click to achieve disconnection or back connection, convenient and fast, to protect privacy.