The weBoost Vehicle Cell Signal Booster Kit broadcasts quality signal wirelessly inside of the vehicle, so you can use your phone like normal while enjoying great signal and fast data speeds. Specifications•Compatibility: All Cellular Enabled Devices ( Smartphones/ Tablets)•Type: Voice/ Text/ 4G Data•Maximum Gain (dB):50 Decibel•Frequency Range: 700 MHz At Band 12/17/ 700 MHz At Band 13/ 850 MHz At Band 5/ 1700/2100 MHz At Band 4•Length (IN):6 Inch•Width (IN):4-1/2 Inch•Height (IN):1-1/2 Inch•With Antenna: Yes