By the greater expense, this card-fi card with Wi-Fi support, released by Wearable Inc, can be used with any Wi-Fi device, but the market nomenclature is such that it is easier to position it as a wireless flash drive and Apple phones. Although the manufacturer talks about some optimization there and focuses on the possibility of playing streaming video from the SD card installed in Airstash. Cart-reader supports WPA2 PSK encryption has a built-in lithium-polymer battery, which is charged when connecting to USB. Such a tricky opportunity to expand your iPhone memory for $ 100, not counting the cost of the SD card. Cards are supported by a capacity of up to 32GB.