Specification: Item Name: T-type RC Antenna Weight: 40mm-0.41g/90mm-0.56g Length: 40/90 mm Frequency: 2400.0 MHz Efficiency: -0.89 dBi Gain: 2.23 dBi Efficiency: 81.46 % Directivity: 5.12 dB Peak Gain Position: 180.00 Theta Peak Gain Position: 330.00 Phi Efficiency ThetaPol: 20.90 % Efficiency PhiPol: 60.56 % Upper Hem. Efficiency: 39.93 % Lower Hem. Efficiency: 41.54 % Connector: IPEX/IPX/U.FL Antenna width 52mm Antenna length 40mm/90mm (Choose when adding to cart) Package Included: 1 x Antenna