The Microchip RN-SMA4 is a 4in. antenna with reverse polarity (male) SMA connector for WiFi and Bluetooth., Centre frequency: 2.45GHz. Bandwidth: 120MHz. Wavelength: 1/2-wave. VSWR: <1.9 typical at centre. Impedance: 50 ohms. Gain: 2.20dBi. Connector: SMA