Had it for about a month, works as expected. Like the portability- we have it by the entrance door and on days when we expect a delivery, we move it to the window so it can monitor the front porch. Unfortunately the motion sensor does not work through window glass, so no motion is triggered, notified nor recorded. Other than that, the unit seems to perform as expected. The lithium batteries that come with it is Energizer Ultimate Lithium batteries which cost about $2 apiece when we need to replace.