Smoothtalker CX6 series is the highest power single user cradle booster available. This booster will keep you connected where other boosters fail. The kit comes with a separate cradle and booster to keep heat away from your phone or cellular device. Even the largest smartphones fit into the universal cradle and the booster will keep you connected further from the network than any other cradle booster. Rugged cast aluminum construction provides superior shielding, heat dissipation and longevity. Includes rugged magnetic mount 2 inch stainless steel antenna. 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).