the effective signal range and solve the unstable situation of WIFI dropOmni-directional 2.4Ghz/5Ghz dual-band antenna is compatible with wireless devices magnets are designed on the bottom, easy to installIt can be installed in the location using a 6.5-foot extension cableApplication: 4G LTE router, Dlink wireless router, wireless network adapter PCI card, notebook computer external USB wireless network adapter, WLAN and hotspot wireless range extender, etc.size:21.5x7.5x8cmMaterial:ABS+PVCcolour:BlackPackage Contents:1 x Dual-band extension cable antennaOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.