SD I/O (Input/Output) card is an interface that extends the functionality of devices with SD card slots. A variety of SD I/O cards are being developed, such as the SD Camera card, SD Bluetooth? card, SD GPS card, and SD Mobile Communication card.
Of course, the host device for the SD I/O Card will also be able to use the SD Memory Card.
Bluetooth is a trademark owned by Bluetooth SIG, Inc.