Wilson Electronics 805221 Wilson Electronics U-Booster Cell Phone Signal Cradle Booster for All Cell Phones - 1 Pack - Case - Carrier Packaging - Neutral Enhances Cellular Signal for Both Voice & Data Built-In Cellular Signal Amplifier Up to 20X More Output to Cellular Site When In A Vehicle Receives Weak Signals Provides a signal up to 20 times stronger than your cell phone, improving reception and data rates Plug & Play Kit--easy installation and everything your need is in the box Has built in cell phone charging capabilities (phone specific charging cable is not included) Simplifies hands free operation when used with a headset or Bluetooth device Comes with a 30-day money-back guarantee and a one-year manufacturer's warranty