When the printer-free 3G terminal is in the cradle, it becomes a chunkier, but portable, card machine with receipt printer.
You can also use the 3G reader on its own, but then it won’t be able to print receipts.
Moreover, the 3G Printer functions as a charger for the card reader battery. When the card reader is placed in the printing/charging cradle, both the terminal and printer will be charging. If the card reader is not placed in the cradle, only the printer is charging.
When not coupled with the card reader, the 3G Printer doesn’t have any other functions. It doesn’t print receipts with a wireless connection.