This antenna allows you to add high gain external antennas to many wireless routers that normally support non-removable antennas. Largely Increases speed and signal strength for routers.SMA connector: This high-performance 4G antenna with SMA connector, suitable for any access point or access point, compatible with many models that have an SMA Male connector.Plug and Play: Simply mount them on the back of the 4G LTE device for better signal strength. You can use this antenna for an improved signal during outdoor activities.Dual-Band: High-quality dual-band antennas provide high-reliability omnidirectional wireless transmission coverage. 90 degree rotation can adjust this antenna until you get the strongest signal.Applications: B593 / B315 Router AV Transmitter -Link Dlink Wifi Router Radios Mobile Hotspots 2G 3G 4G LTE GSM Wireless Bluetooth HSDPA UMTS DCS Antenna Connector.The advantages of this kind of antenna are high gain, good fan direction, small and portable, vertical Angle of vertical direction, easy to control, reliable sealing performance and long service life. Specification: Gain: 9dBi Polarization Type: Vertical Input Impedance: 50 Ohms VSWR: less than or equal to 1.5 Frequency Range-MHz: 700-960/1710-2700Mhz Connector Type: SMA Male Colour: blackMaterial: plasticSize: 19 x 1.5cmPackage Contents:2 x dual-band antennasTips: 1.Please make sure your device supports extra antennas (Some devices need to be set up: Change the antenna connection method to extra antenna). 2.Please check the connector type of your device and make sure this antenna is suitable for it.Only the above package content, other products are not included.Note: Light 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.