There will be three devices of each the reader, and tablet. This will look familiar if you have read the other Senitrus sites. The first is the A Series. This is the mid-range reader, and while it would have the same specs as the W, the A will also have cellular capability. Then there is the P which is the top of the line reader, and will be able to support micro-SD cards of up to 128TB which is not nearly that close with it comes to current microSD cards. Last is the W series are no frill, Wifi/Bluetooth only. There is no cellular capability with the W serices.