A top quality, no installation required antenna that will increase your Sierra Wireless AirCard 775 3G and 4G signal strength while removing most EM radiation away from you and into the antenna. Simply plug the included cable into your Sierra Wireless AirCard 775 antenna port and enjoy the increased signal and improved data transfer rate. This signal improvement system is made for the Sierra Wireless AirCard 775 and comes with a total cable length of at least fifteen feet. The adapter is easily replaceable so that if you change your device you won't have to purchase this complete set again. No installation required. One year limited warranty included.