A top quality, no installation required antenna that will increase your Huawei EC351 3G and 4G signal strength while removing most EM radiation away from you and into the antenna. Simply plug the included cable into your Huawei EC351 antenna port and enjoy the increased signal and improved data transfer rate. This signal improvement system is made for the Huawei EC351 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.