Other Smartphone Accessories -Speaker External Antenna Highlights Generic Brand Speaker External Antenna Description: Easy to install, improve digital/analog signal and strength signal quality. Once plugged into this antenna, it can increase signal reception in corridors, buildings, tunnels and remote areas. Portable and convenient to use. 3.5mm FM radio antenna to replace the traditional headphone cable. More convenient, practical and good radio effect Applicable to more brand models with the FM radio / mobile phone card speaker, etc. Specification: Frequency Range: 1880-1920/1990-2170MHZ VSWR: 1.5 Gain: 6dBi Polarization Type: Vertical Radiation: Omni Rated Power: 50W Input Impedance: 50 Ohms Connector Type: 3.5mm Dimensions: about 130 mm Package includes: 1x Antenna