Boosts Signal For Cell Carriers; Compatible With Cellular Devices; Voice/ 4G LTE/3G/2G Data; 23 decibels (dB) Maximum Gain; 700 MHz At Band 17/12/13/ 850 MHz At Band 5/ 1700/2100 MHz At Band 4/ 1900 MHz At Band 2; 7 Inch Length x 1.6 Inch Width x 0.65 Inch Height; With Drive Sleek Cradle/ 4G Trucker Antenna/ 12 Volt Power Supply/ 3 Way Antenna Mount; Works With Cellular Service Provider AT And T Wireless/ Verizon Wireless/ T-Mobile And Sprint