Probably a good product, much cheaper than the Eye-Fi equivalent ... but unfortunately incompatible with my Olympus XZ-2, at least partially: access to photos via WiFi is possible (visualization and transfer to the computer) but not the "Live View" function (shooting remotely with the iPhone), contrary to what seemed to indicate the Olympus website. And difficult to use as a simple SD card because the WiFi connection can not be turned off so the battery discharges quickly. The compatibility before purchase, so ...