SureCall TriFlex-V Verizon Home and Office Cell Phone Signal Booster Up to 6,000 sq. ft, Omni and Panel Antennas - Standard Packaging - Black Boosts indoor talk, text and 4G LTE signals for Verizon Reduces dropped and missed calls and increases 4G LTE data speed Stealth technology incorporated - transmit signal becomes dormant when not in use, providing green, power saving operation Backed by a 3 year warranty