with 4G mobile broadband modem routers, simple installation, no software required.Conditions of : the corresponding interface , the corresponding frequency band of the deviceCompatibility list: 3G 4G router modem (gain: 10-12dBi)Can be used indoors or outdoors to enhance and maintain good signal quality.Installation tips: The antenna should be installed vertically to maximize performance, and the antenna should not be installed on metalsize:23 x 6.5 x 6.5CMMaterial:Metal + plasticcolour:WhitePackage Contents:1 x 4G Antenna2 x cableOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.",