Increased cell coverage up to 50 miles or more is now only a connection away! Three watt cell amplifier imp-roves communication by bringing maximum power to all bands of your cell phone. This means fewer dropped calls, clearer connections and stronger signals. Enhances data connections for better internet, fax and text messaging. Connects to most existing hands-free kits and is the only FCC approved amplifier to amplify all cell carriers in the U.S., including Cingular, AT&T, Verizon, Sprint, Alltel and T-Mobile. Includes bi-directional dual band amplifier and 12 VDC cigarette style power cable. Cell antennas and adapter cables, sold separately.