The signal booster helps users reduce dropped calls￡? increase data rates in weak signal areas and originate calls from those dreaded "dead spots". Also￡? it's ideal for hands free operation when used with a headset or Bluetooth device. <br><br><strong>Features:</strong> <br>Works with 3G WCDMA 2100MHz cellphone service providers. <br>Adjustable arms to fit most phones. <br>Boosts signals to and from cell tower. <br>Supports both voice and 3G data. <br>Up to 5-bar coverage in signal weak areas. <br>Installs easily in any vehicle. <br><br><strong>Specifications:</strong> <br>Network Support: 3G￡? WCDMA￡? GSM2100MHz￡? Any Wireless <br>Frequency Range: 1920-1990MHz￡? 2110-2180MHz <br>Booster Gain(dB): Uplink? Gp?Y40￡? Downlink? Gp?Y40 <br>Export Power(Po): ?Y10dBm <br>Pass Band Ripple: ?ü3dB <br>I/O Impedance: 50|?/N connector <br>Noise Figure: ?ü4dB <br>Transmission Delay: ?ü0.5|ìs <br>Ambient Temperature: -10?? - +60?? <br>Power Supply: USB Port￡? DC12-24V <br>Reliability: To the GB6993-86 standard <br>Electromagnetic Compatibility: To the ETS300 694-4 standard <br>Function: Power supply LED denote <br>Package Size: 19 * 15.2 * 5.6cm / 7.5 * 6 * 2.2in <br>Package Weight: 287g / 10.1oz <br><br><strong>Package List:</strong> <br>1 * Signal Booster <br>1 * USB Car Charger Adapter <br>1 * Outside Antenna with 3.5m Cable <br>1 * USB Cable <br>2 * Large Size Cradle Arm <br>2 * Middle Size Cradle Arm <br>2 * Small Size Cradle Arm <br>1 * Mounting Bracket <br>1 * English User Manual