Product Features: The directional antenna is like a bowl-shaped reflective surface behind the antenna. The signal can only be transmitted to the front, and the signal to the back is blocked and reflected by the reflective surface. To the front, the previous signal strength is strengthened. The following figure shows the signal radiation pattern of a directional antenna. The main radiation range of a directional antenna is like an inverted, less complete cone. Technical Specfication: Model No.: -A201 Frequency: 2400-2500MHz VSWR: 1.8: 1max Gain: 25dBi Polarization Type: Linear Vertical Rated Power: 30W Input Impedance: 50 Ohms nominal Connector Type: RP-SMA Install the Way: Adsorption Material: Metal+Plastic colour: Silver Package Contents: 1 x WiFi Antenna 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.