No advantage to make that version called "OUTSIDE", that is why I take off a star. This is the same as the "EXTERNAL" (TP-Link - Antenna External Wifi - directional 9dBi) No difference in sealing and materials. Unless the price (more expensive) and that we should also purchase an adapter cable N => SMA Otherwise like: TP-Link - Antenna External Wifi - directional 9dBi is excellent directional antenna.
