ITEM NAME:2pcs SMA Female WiFi Antenna 2dBi for Wireless LAN Router Dual Band M&O Features: This antenna is good for replaecment, it does not affect performance. Frequency: 2400-2500MHz Input impedence: 50Ω Radiation: Omni Gain: 2-3dBi Length: 11mm Connector: SMA Packing include: 2pcs x antenna SMA Female.2pcs x antenna SMA Female. Connector: SMA. Input impedence: 50Ω. Length: 11mm.