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SMK-Link's iCalc Bluetooth Calculator Keypad is a wireless keypad and calculator peripheral created to magnetically align with Apple's wireless keyboard, or to act as a stand-alone keypad/calculator of Apple MacBooks, iMacs and PC-Windows laptops. Connecting via Bluetooth wireless, the iCalc has a wireless range of up to 33ft and offers advance numeric data entry for spreadsheet, accounting, engineering and other number-intensive applications.