Interlink Electronics VP6273 Bluetooth Calculator Keypad increases productivity for notebook users. This wireless numeric keypad doubles as a ten-key for spreadsheets and data entry and as a stand alone calculator. The VP6273 features an LCD display, Bluetooth wireless up to 33 feet. Calculations computed on the keypad can be sent directly into a spreadsheet just like you typed them. Cut the cord and go wireless. For computers with Bluetooth built in, there is no need for any dongle or cord. For those without, it works perfectly with Interlink Electronics Nano Bluetooth Dongle.