weBoost Drive 3G-X Cell phone Signal Booster for Car, Truck, and RV use, for up to 4 devices WEBOOST'S MOST POWERFUL 3G VEHICLE BOOSTER - Stronger signal on the road. BOOSTS CELL SIGNALS UP TO 32X - Enhances 3G and voice signals for everyone in the vehicle (car, truck, van or RV). BETTER VOICE AND DATA - Get fewer dropped calls, better voice quality, faster uploads and downloads. COMPATIBLE WITH ALL US NETWORKS - Works on Verizon, AT&T, Sprint, T-Mobile, US Cellular, Straight Talk and more. QUICK, EASY SETUP - Do-it-yourself installation. PERFROMANCE GUARANTEED - Manufacturer 2-year warranty and 30-day money-back guarantee.