Extreme power building cell booster kit with high gain directional and omni tube antennas, 65 db gain, complete kit includes all parts required - with f type connectors, covers up to 8000 sq. Ft. (sq ft will vary with outside signal strength), recommended for locations up to 30 miles (50 km) from the nearest cellular tower (also recommended for locations less than 1km from nearest cellular tower) features connects you in poor signal areas reduces dropped calls multiple users- multiple devices easy install boosts rx and tx - network friendly increase data speeds up to 30 times