IMPROVES CELLULAR PHONE & CELLULAR-BASED DATA CARD PERFORMANCE IN THE HOME OR OFFICEANYWHERE A STRONGER CELLULAR SIGNAL IS NEEDED INDOORS;GREATLY REDUCES DROPPED CALLS & INCREASES THE PHONE\'S BATTERY LIFE; SUPPORTS MULTIPLE PHONES & CELLULAR-BASED DATA CARD USERS SIMULTANEOUSLY; WORKS WITH ALL CELLULAR PHONES & ALL US-BASED CARRIERS EXCEPT IDEN/NEXTEL; INCLUDES EVERYTHING NEEDED TO IMPROVE SIGNAL IN ANY ROOM OF THE HOME OR OFFICE & AC POWER SUPPLY; UP TO 500 SQ FT COVERAGE AREALength: 18.75Width: 14.00Height: 4.75