A top quality, no installation required antenna that will increase your Sprint U727 3G and 4G signal strength while removing most EM radiation away from you and into the antenna. Simply plug the included cable into your Sprint U727 antenna port and enjoy the increased signal and improved data transfer rate. This signal improvement system is made for the Sprint U727 but should you change device in the future, you'll be able to simply replace the included adapter without having to purchase the complete system again. Total cable length of at least fifteen feet included. Patent pending. One year limited warranty included.