A top quality, no installation required antenna that will increase your Novatel Wireless Merlin C777 3G and 4G signal strength while removing most EM radiation away from you and into the antenna. Simply plug the included cable into your Novatel Wireless Merlin C777 antenna port and enjoy the increased signal and improved data transfer rate. This signal improvement system is made for the Novatel Wireless Merlin C777 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.