Smoothtalker Stealth X6 series home/building boosters are the most powerful consumer boosters on the market. This solution will provide reliable signal and coverage for all devices and network providers. Power and reliable signal when you need it. Ideal for locations with poor network signal. Features automatic oscillation control, and network overload protection to maintain optimum performance at all times. This 3G,4G,LTE Signal Booster Kit covers the following Cellular Frequency Bands: Band 12/17 (Lower 700MHz), Band 13 (Upper 700 MHz), Band 5 (850 MHz), Band 2/25 (1900 MHz) Band 4 (AWS 1700/2100 MHz).