The LG LBA C300 is a credit-card-sized QWERTY keyboard that can hook up to LG mobile phones wirelessly via Bluetooth. It seems that LB GBA C300 is supposed to be used mainly as a wireless QWERTY keyboard for LG phones.
The LG C-300 is more or less the size of a credit card. It is able to write and send new messages and display allows you to read the incoming ones. LG C300 Qwerty Card also allows you to enter, store and view contact information on a paired phone, has the clock, alarm and calendar functions, can be used as a stop watch, act as a keypad for a phone. You can also use the card QWERTY as a remote phone’s camera controller or to reject incoming calls or set the remote phone into silent mode.