Really nice and comes in very handy in certain cases. The plug is round and might block adjacent wall plugs or sockets if they're close to each other which will make the oher plug unusable. Other than that, this smart wifi plug is easy to use by simply connecting and pairing your device to it and you control it wirelessly, giving you the option to turn on or off devices. Instructions are easy to follow and pretty straightforward, and it is compatible with all wall socket featuring voltage compatibility of AC 110~240V 50/60HZ